diff --git a/src/gui/panels/step13_report_panel.py b/src/gui/panels/step13_report_panel.py
index d7b7a47..4706bf5 100644
--- a/src/gui/panels/step13_report_panel.py
+++ b/src/gui/panels/step13_report_panel.py
@@ -14,7 +14,7 @@ from src.gui.panels._step_path_resolver import resolve_subdir
 from PyQt5.QtCore import Qt, QThread, pyqtSignal, QSettings
 from PyQt5.QtWidgets import (
     QWidget, QVBoxLayout, QHBoxLayout, QGroupBox, QFormLayout,
-    QLabel, QCheckBox, QPushButton, QLineEdit, QSpinBox,
+    QLabel, QCheckBox, QPushButton, QLineEdit, QComboBox, QSpinBox,
     QMessageBox, QFileDialog, QProgressBar,
 )
 
@@ -34,12 +34,13 @@ class ReportWorkerThread(QThread):
     error = pyqtSignal(str)
 
     def __init__(self, work_dir: str, output_dir: Optional[str], report_title: str,
-                 enable_ai: bool, ai_maps_limit: int = 999):
+                 enable_ai: bool, report_mode: str = 'auto', ai_maps_limit: int = 999):
         super().__init__()
         self.work_dir = work_dir
         self.output_dir = output_dir
         self.report_title = report_title
         self.enable_ai = enable_ai
+        self.report_mode = report_mode
         self.ai_maps_limit = ai_maps_limit
 
     def run(self):
@@ -78,7 +79,7 @@ class ReportWorkerThread(QThread):
             out_path = gen.generate_report(
                 work_dir=self.work_dir,
                 report_title=self.report_title or "水质参数反演分析报告",
-                report_mode='auto',
+                report_mode=self.report_mode,
                 ai_maps_limit=self.ai_maps_limit,
                 on_progress=lambda pct, text: self.progress.emit(int(pct), str(text)),
             )
@@ -261,6 +262,21 @@ class Step13ReportPanel(QWidget):
         """)
         execute_layout.addWidget(self.progress_bar)
 
+                # 报告模式（自动检测 + 可手动纠正）
+        mode_row = QHBoxLayout()
+        mode_row.setContentsMargins(0, 4, 0, 0)
+        mode_row.setSpacing(10)
+        mode_label = QLabel("报告模式:")
+        mode_label.setMinimumWidth(120)
+        mode_label.setMaximumWidth(120)
+        mode_row.addWidget(mode_label)
+        self.report_mode_cb = QComboBox()
+        self.report_mode_cb.addItem("机器学习水质参数反演", "ml")
+        self.report_mode_cb.addItem("水色指数与物理经验公式反演", "formula")
+        self.report_mode_cb.setStyleSheet(common_lineedit_css)
+        mode_row.addWidget(self.report_mode_cb, 1)
+        execute_layout.addLayout(mode_row)
+
         # AI 专题图分析数量（仅水色指数公式模式生效，ML 模式忽略）
         ai_maps_row = QHBoxLayout()
         ai_maps_row.setContentsMargins(0, 0, 0, 0)
@@ -401,6 +417,16 @@ class Step13ReportPanel(QWidget):
                 f"未找到可视化目录：\n{viz}\n请先完成流程或生成可视化。",
             )
             return
+
+        # 自动检测报告模式（参考 Step11 逻辑）
+        wd_path = Path(wd)
+        ml_dir = wd_path / "9_ML_Prediction"
+        formula_dir = wd_path / "10_WaterIndex_CSV"
+        if ml_dir.is_dir() and list(ml_dir.glob("*.csv")):
+            self.report_mode_cb.setCurrentIndex(0)  # ML
+        elif formula_dir.is_dir() and list(formula_dir.glob("*.csv")):
+            self.report_mode_cb.setCurrentIndex(1)  # 公式
+
         if self._report_thread and self._report_thread.isRunning():
             QMessageBox.information(self, "提示", "报告正在生成中，请稍候。")
             return
@@ -414,8 +440,9 @@ class Step13ReportPanel(QWidget):
         self.progress_bar.setValue(0)
         self.progress_label.setText("正在准备生成…")
 
+        report_mode = self.report_mode_cb.currentData()
         ai_maps_limit = self.ai_maps_spin.value()
-        self._report_thread = ReportWorkerThread(wd, out, title, enable_ai, ai_maps_limit)
+        self._report_thread = ReportWorkerThread(wd, out, title, enable_ai, report_mode, ai_maps_limit)
         self._report_thread.progress.connect(self._on_progress, Qt.QueuedConnection)
         self._report_thread.finished.connect(self._on_finished, Qt.QueuedConnection)
         self._report_thread.error.connect(self._on_error, Qt.QueuedConnection)
diff --git a/src/postprocessing/report_word.py b/src/postprocessing/report_word.py
index 57d29d7..c008ab4 100644
--- a/src/postprocessing/report_word.py
+++ b/src/postprocessing/report_word.py
@@ -804,7 +804,7 @@ class WaterQualityReportGenerator:
                          "spCond", "Turbidity", "TDS", "Cl-", "NO3-N",
                          "NH3-N", "BGA", "TT"]
 
-        # ── 自动检测管线模式（参考 Step11 逻辑）──
+        # ── 确定管线模式（优先用户选择，否则自动检测）──
         if report_mode == 'auto':
             ml_dir = self.work_dir / "9_ML_Prediction"
             formula_dir = self.work_dir / "10_WaterIndex_CSV"
@@ -813,10 +813,10 @@ class WaterQualityReportGenerator:
             elif formula_dir.is_dir() and list(formula_dir.glob("*.csv")):
                 report_mode = 'formula'
             else:
-                report_mode = 'ml'  # 兜底
-
-        self._pipeline_mode = 'water_index' if report_mode == 'formula' else 'ml'
-        print(f"[报告] 自动检测 → 模式: {report_mode}")
+                report_mode = 'ml'
+            print(f"[报告] 自动检测 → {report_mode}")
+        else:
+            print(f"[报告] 用户选择 → {report_mode}")
 
         if report_mode == 'formula':
             return self._generate_formula_report(parameters, report_title, output_path,