diff --git a/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/MesXslMixingSpec.data.ts b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/MesXslMixingSpec.data.ts
index 734c5bb..7b7ad45 100644
--- a/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/MesXslMixingSpec.data.ts
+++ b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/MesXslMixingSpec.data.ts
@@ -1115,3 +1115,73 @@ export function applyMixingMaterialFromSelection(row: Recordable, material: Reco
   //update-end---author:cursor ---date:20260525  for：【XSLMES-20260525-A53】种类仅读配置表，移除小类名兜底-----------
 }
 //update-end---author:cursor ---date:20260525  for：【XSLMES-20260525-A50】混炼示方密炼物料选料弹窗与种类解析-----------
+
+//update-begin---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤选择弹窗-----------
+/** 混合步骤可复制的业务字段 */
+export const MIXING_STEP_COPY_FIELD_KEYS = [
+  'sortNo',
+  'actionName',
+  'actionSec',
+  'protectSec',
+  'tempC',
+  'powerKw',
+  'energyKwh',
+  'comboMode',
+  'speedRpm',
+  'pressureMpa',
+  'boltPercent',
+] as const;
+
+/** 判断混合步骤行是否含有效业务数据 */
+export function isMixingStepRowFilled(row: Recordable = {}): boolean {
+  return MIXING_STEP_COPY_FIELD_KEYS.some((key) => {
+    const value = row[key];
+    return value != null && value !== '';
+  });
+}
+
+/** 从历史混炼示方混合步骤克隆为新行（生成新 id，剔除主表/审计字段） */
+export function cloneMixingHistoryStepRows(sourceRows: Recordable[] = []): Recordable[] {
+  return (sourceRows || [])
+    .filter((row) => isMixingStepRowFilled(row))
+    .map((row, index) => {
+      const next: Recordable = { id: buildUUID() };
+      MIXING_STEP_COPY_FIELD_KEYS.forEach((key) => {
+        const value = row[key];
+        if (value != null && value !== '') {
+          next[key] = value;
+        }
+      });
+      if (next.sortNo == null) {
+        next.sortNo = index + 1;
+      }
+      return next;
+    });
+}
+
+/** 解析混炼示方配方状态（参照旧系统展示） */
+export function resolveMixingSpecFormulaStatus(record: Recordable = {}): string {
+  if (Number(record.delFlag) === 1) {
+    return '作废';
+  }
+  if (record.approveTime) {
+    return '审批通过';
+  }
+  return '编制中';
+}
+
+/** 参照历史混合步骤：混炼示方选择列表列 */
+export const mixingSpecHistorySelectColumns: BasicColumn[] = [
+  { title: '示方编号', align: 'center', dataIndex: 'specName', width: 160 },
+  { title: '机台', align: 'center', dataIndex: 'machineName', width: 100 },
+  { title: '发行编号', align: 'center', dataIndex: 'issueNumber', width: 150 },
+  { title: '发行日期', align: 'center', dataIndex: 'makeDate', width: 120 },
+  {
+    title: '配方状态',
+    align: 'center',
+    dataIndex: 'formulaStatus',
+    width: 100,
+    customRender: ({ record }) => resolveMixingSpecFormulaStatus(record),
+  },
+];
+//update-end---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤选择弹窗-----------
diff --git a/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecModal.vue b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecModal.vue
index 9bec8b2..31ca379 100644
--- a/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecModal.vue
+++ b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecModal.vue
@@ -284,6 +284,9 @@
               <span>混合步骤</span>
               <div class="panel-head-actions" @click.stop>
                 <MesXslMixingTableRowHeightSetting table-key="step" v-model:preference="stepHeightPref" />
+                <!--update-begin---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】混合步骤参照历史示方按钮----------- -->
+                <a-button v-if="showFooter" size="small" @click="openHistoryStepPicker">参照历史混合步骤</a-button>
+                <!--update-end---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】混合步骤参照历史示方按钮----------- -->
                 <a-button v-if="showFooter" size="small" type="primary" @click="addStepRow">新增行</a-button>
               </div>
             </div>
@@ -417,6 +420,7 @@
   <MesXslEquipmentLedgerSelectModal @register="registerMachineModal" @select="onMachineSelect" />
   <MesXslMixerPsCompileSelectModal @register="registerIssueNumberModal" @select="onIssueNumberSelect" />
   <MesXslMixingMaterialSelectModal @register="registerMixingMaterialModal" @select="onMixingMaterialSelect" />
+  <MesXslMixingSpecStepHistorySelectModal @register="registerHistoryStepModal" @select="onHistoryStepSelect" />
 </template>
 
 <script lang="ts" setup>
@@ -466,6 +470,7 @@ import {
   syncMaterialBaseUnitWeightFromDisplay,
   calcMixingFillVolume,
   resolveMixingSpecificGravity,
+  cloneMixingHistoryStepRows,
   MIXING_MATERIAL_ROW_NUMBER_WIDTH,
   MIXING_MATERIAL_FOOTER_ROW_HEIGHT,
   MIXING_MATERIAL_MIN_COLUMN_WIDTH,
@@ -482,6 +487,7 @@ import MesXslEquipmentLedgerSelectModal from '/@/views/xslmes/mesXslEquipInspect
 import { queryById as queryEquipmentById } from '/@/views/xslmes/mesXslEquipmentLedger/MesXslEquipmentLedger.api';
 import MesXslMixerPsCompileSelectModal from '/@/views/xslmes/mesXslMixerPsCompile/components/MesXslMixerPsCompileSelectModal.vue';
 import MesXslMixingMaterialSelectModal from './MesXslMixingMaterialSelectModal.vue';
+import MesXslMixingSpecStepHistorySelectModal from './MesXslMixingSpecStepHistorySelectModal.vue';
 
 const emit = defineEmits(['register', 'success']);
 const { createMessage } = useMessage();
@@ -886,12 +892,16 @@ const [registerForm, { resetFields, setFieldsValue, validate, setProps }] = useF
 const [registerMachineModal, { openModal: openMachineModalInner, closeModal: closeMachineModal }] = useModal();
 const [registerIssueNumberModal, { openModal: openIssueNumberModalInner, closeModal: closeIssueNumberModal }] = useModal();
 const [registerMixingMaterialModal, { openModal: openMixingMaterialModalInner, closeModal: closeMixingMaterialModal, setModalProps: setMixingMaterialModalProps }] = useModal();
+//update-begin---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤选择弹窗-----------
+const [registerHistoryStepModal, { openModal: openHistoryStepModalInner, closeModal: closeHistoryStepModal, setModalProps: setHistoryStepModalProps }] = useModal();
+//update-end---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤选择弹窗-----------
 
 //update-begin---author:cursor ---date:20260525  for：【XSLMES-20260525-A52】关闭混炼示方弹窗时同步关闭嵌套选料弹窗-----------
 function closeNestedPickers() {
   closeMixingMaterialModal();
   closeMachineModal();
   closeIssueNumberModal();
+  closeHistoryStepModal();
   materialPickerRow.value = null;
 }
 //update-end---author:cursor ---date:20260525  for：【XSLMES-20260525-A52】关闭混炼示方弹窗时同步关闭嵌套选料弹窗-----------
@@ -950,6 +960,38 @@ function onMixingMaterialSelect(payload: Recordable | null) {
   recalcMaterialAccumWeight();
   materialPickerRow.value = null;
 }
+
+//update-begin---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤回填明细-----------
+function openHistoryStepPicker() {
+  if (!showFooter.value) {
+    return;
+  }
+  setHistoryStepModalProps({ zIndex: 1500 });
+  openHistoryStepModalInner(true, {
+    machineId: sheetForm.machineId || '',
+    excludeSpecId: sheetForm.id || '',
+  });
+}
+
+async function onHistoryStepSelect(payload: Recordable | null) {
+  if (!payload?.mixingSpecId) {
+    return;
+  }
+  try {
+    const raw = await queryById({ id: payload.mixingSpecId });
+    const row = (raw as Recordable)?.specName != null ? raw : (raw as Recordable)?.result;
+    const clonedSteps = cloneMixingHistoryStepRows(row?.stepList || []);
+    if (!clonedSteps.length) {
+      createMessage.warning('所选混炼示方没有可参照的混合步骤');
+      return;
+    }
+    stepData.value = ensureMixingDetailRows(clonedSteps, DEFAULT_MIXING_STEP_ROW_COUNT);
+    createMessage.success(`已参照「${payload.specName || row?.specName || ''}」混合步骤`);
+  } catch {
+    createMessage.error('加载历史混合步骤失败');
+  }
+}
+//update-end---author:cursor ---date:20260526  for：【XSLMES-20260526-A58】参照历史混合步骤回填明细-----------
 //update-end---author:cursor ---date:20260522  for：【XSLMES-20260522-A33】混炼示方主表选择弹窗-----------
 
 function ensureTcuDefaultRows(rows: Recordable[] = []) {
diff --git a/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecStepHistorySelectModal.vue b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecStepHistorySelectModal.vue
new file mode 100644
index 0000000..cec737f
--- /dev/null
+++ b/jeecgboot-vue3/src/views/xslmes/mesXslMixingSpec/components/MesXslMixingSpecStepHistorySelectModal.vue
@@ -0,0 +1,232 @@
+<template>
+  <BasicModal
+    v-bind="$attrs"
+    title="选取混合示方（双击表格可选择）"
+    :width="960"
+    :zIndex="1500"
+    wrapClassName="mixing-step-history-picker-modal-wrap"
+    @register="registerModal"
+    @ok="handleOk"
+  >
+    <div class="mixing-step-history-picker">
+      <div class="mixing-step-history-picker-toolbar">
+        <span class="mixing-step-history-picker-label">关键字</span>
+        <a-input
+          v-model:value="keyword"
+          allow-clear
+          placeholder="规格/用途/发行编号/机台"
+          style="width: 240px"
+          @pressEnter="reloadTable"
+        />
+        <span class="mixing-step-history-picker-label">机台</span>
+        <a-select
+          v-model:value="machineId"
+          allow-clear
+          show-search
+          option-filter-prop="label"
+          placeholder="==请选择=="
+          style="width: 160px"
+          :options="machineOptions"
+          :loading="machineLoading"
+          :getPopupContainer="getSelectPopupContainer"
+          popupClassName="mixing-step-history-picker-machine-dropdown"
+          @click.stop
+        />
+        <a-button type="primary" @click="reloadTable">搜索</a-button>
+      </div>
+      <BasicTable @register="registerTable" @row-dbClick="handleRowDbClick" />
+    </div>
+  </BasicModal>
+</template>
+
+<script lang="ts" setup>
+  import { ref } from 'vue';
+  import { BasicModal, useModalInner } from '/@/components/Modal';
+  import { BasicTable, useTable } from '/@/components/Table';
+  import { useMessage } from '/@/hooks/web/useMessage';
+  import { list as mixingSpecList, queryById as queryMixingSpecById } from '../MesXslMixingSpec.api';
+  import { mixingSpecHistorySelectColumns } from '../MesXslMixingSpec.data';
+  import { list as equipmentList } from '/@/views/xslmes/mesXslEquipmentLedger/MesXslEquipmentLedger.api';
+
+  const emit = defineEmits(['register', 'select']);
+
+  const { createMessage } = useMessage();
+
+  const keyword = ref('');
+  const machineId = ref<string | undefined>(undefined);
+  const machineOptions = ref<Array<{ label: string; value: string }>>([]);
+  const machineLoading = ref(false);
+  const excludeSpecId = ref('');
+  const selectedRow = ref<Recordable | null>(null);
+
+  function getSelectPopupContainer() {
+    return document.body;
+  }
+
+  const [registerTable, { reload, getSelectRowKeys, getSelectRows, setSelectedRowKeys, clearSelectedRowKeys }] = useTable({
+    api: mixingSpecList,
+    columns: mixingSpecHistorySelectColumns,
+    rowKey: 'id',
+    useSearchForm: false,
+    pagination: { pageSize: 30 },
+    canResize: false,
+    showIndexColumn: true,
+    immediate: false,
+    beforeFetch: (params) => ({
+      ...params,
+      keyword: keyword.value?.trim() || undefined,
+      machineId: machineId.value || undefined,
+    }),
+    afterFetch: (rows) => {
+      if (!excludeSpecId.value) {
+        return rows;
+      }
+      return (rows || []).filter((row) => row?.id !== excludeSpecId.value);
+    },
+    rowSelection: {
+      type: 'radio',
+      columnWidth: 48,
+      onChange: (_keys, rows) => {
+        selectedRow.value = rows?.[0] ?? null;
+      },
+    },
+    clickToRowSelect: true,
+  });
+
+  async function loadMachineOptions() {
+    machineLoading.value = true;
+    try {
+      const optionMap = new Map<string, { label: string; value: string }>();
+      const raw = await mixingSpecList({ pageNo: 1, pageSize: 500 });
+      const page = (raw as Recordable)?.records != null ? raw : (raw as Recordable)?.result;
+      const specRecords = ((page?.records || page || []) as Recordable[]).filter(Boolean);
+      specRecords.forEach((row) => {
+        if (!row?.machineId) {
+          return;
+        }
+        const value = String(row.machineId);
+        optionMap.set(value, {
+          value,
+          label: row.machineName || value,
+        });
+      });
+      if (!optionMap.size) {
+        const eqRaw = await equipmentList({ pageNo: 1, pageSize: 500 });
+        const eqPage = (eqRaw as Recordable)?.records != null ? eqRaw : (eqRaw as Recordable)?.result;
+        const eqRecords = ((eqPage?.records || eqPage || []) as Recordable[]).filter(Boolean);
+        eqRecords.forEach((row) => {
+          if (!row?.id) {
+            return;
+          }
+          const value = String(row.id);
+          optionMap.set(value, {
+            value,
+            label: row.equipmentName || row.equipmentCode || value,
+          });
+        });
+      }
+      machineOptions.value = Array.from(optionMap.values()).sort((a, b) =>
+        a.label.localeCompare(b.label, 'zh-CN'),
+      );
+    } catch {
+      machineOptions.value = [];
+    } finally {
+      machineLoading.value = false;
+    }
+  }
+
+  function reloadTable() {
+    reload();
+  }
+
+  async function resolveSelectedRow(): Promise<Recordable | null> {
+    const keys = (getSelectRowKeys?.() || []) as string[];
+    let row = selectedRow.value || ((getSelectRows?.() || []) as Recordable[])[0];
+    if (!row?.id && keys.length) {
+      try {
+        const raw = await queryMixingSpecById({ id: keys[0] });
+        row = (raw as Recordable)?.specName != null ? raw : (raw as Recordable)?.result;
+      } catch {
+        row = null;
+      }
+    }
+    return row?.id ? row : null;
+  }
+
+  async function confirmSelect(row: Recordable) {
+    if (!row?.id) {
+      createMessage.warning('请选择一条混炼示方');
+      return;
+    }
+    if (row.id === excludeSpecId.value) {
+      createMessage.warning('不能参照当前正在编辑的混炼示方');
+      return;
+    }
+    emit('select', {
+      mixingSpecId: row.id,
+      specName: row.specName || '',
+      machineName: row.machineName || '',
+      issueNumber: row.issueNumber || '',
+    });
+    closeModal();
+  }
+
+  async function handleOk() {
+    const row = await resolveSelectedRow();
+    if (!row) {
+      createMessage.warning('请选择一条混炼示方');
+      return;
+    }
+    await confirmSelect(row);
+  }
+
+  async function handleRowDbClick(record: Recordable) {
+    if (!record?.id) {
+      return;
+    }
+    setSelectedRowKeys?.([record.id]);
+    selectedRow.value = record;
+    await confirmSelect(record);
+  }
+
+  const [registerModal, { setModalProps, closeModal }] = useModalInner(async (data) => {
+    keyword.value = '';
+    machineId.value = data?.machineId || undefined;
+    excludeSpecId.value = data?.excludeSpecId || '';
+    selectedRow.value = null;
+    clearSelectedRowKeys?.();
+    setModalProps({ confirmLoading: false });
+    await loadMachineOptions();
+    reload();
+  });
+</script>
+
+<style lang="less" scoped>
+  .mixing-step-history-picker-toolbar {
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 8px;
+    margin-bottom: 12px;
+  }
+
+  .mixing-step-history-picker-label {
+    color: #333;
+    font-size: 13px;
+    white-space: nowrap;
+  }
+</style>
+
+<style lang="less">
+  /* 嵌套在全屏混炼示方弹窗之上，避免被父弹窗遮挡 */
+  .mixing-step-history-picker-modal-wrap {
+    .ant-modal {
+      top: 40px;
+    }
+  }
+
+  /* 机台下拉挂到 body，避免弹窗 overflow 裁剪；层级高于 Modal */
+  .mixing-step-history-picker-machine-dropdown {
+    z-index: 2100 !important;
+  }
+</style>