diff --git a/config.py b/config.py
index b6f7074..bf0bc26 100644
--- a/config.py
+++ b/config.py
@@ -54,6 +54,8 @@ STEADY_STATE_WINDOW_S = 2.0      # 滑动时间窗口长度
 STEADY_STATE_BAND_PCT = 2.0      # 滑窗均值相对目标的允许误差带（±2%）
 STEADY_STATE_STD_PCT = 2.0       # 滑窗标准差阈值（相对目标百分比）
 
+AUTO_STOP_ON_STEADY = True       # 达到稳态后是否自动停止控制（False 则持续控制）
+
 # ---------------------------------------------------------------------------
 # 阀门执行机构
 # ---------------------------------------------------------------------------
diff --git a/main.py b/main.py
index e0212a6..f9baed6 100644
--- a/main.py
+++ b/main.py
@@ -189,6 +189,10 @@ def run(target_flow_slm):
             recorder.record(result)
             reporter.observe(result)
 
+            if config.AUTO_STOP_ON_STEADY and reporter.steady_reached:
+                logger.info("已达到稳态，自动停止控制")
+                break
+
             if now >= next_status_time or result.status != "OK":
                 logger.info(format_status(result))
                 next_status_time = now + config.STATUS_PRINT_PERIOD_S
diff --git a/performance_reporter.py b/performance_reporter.py
index 4e0f765..3076c85 100644
--- a/performance_reporter.py
+++ b/performance_reporter.py
@@ -43,6 +43,9 @@ class PerformanceReporter:
 
         self.target_flow_slm = None
         self.settling_time_s = None
+        self.steady_mean = None
+        self.steady_std = None
+        self.steady_error_slm = None
         self._first_timestamp = None
         self._peak_flow_slm = None
         self._min_flow_slm = None
@@ -94,6 +97,9 @@ class PerformanceReporter:
         if abs(mean - target) <= band and std <= std_threshold:
             self._reached = True
             self.settling_time_s = elapsed_s
+            self.steady_mean = mean
+            self.steady_std = std
+            self.steady_error_slm = target - mean
             self._report()
 
     def finalize(self):
@@ -101,6 +107,11 @@ class PerformanceReporter:
         if not self._reached and self.target_flow_slm is not None:
             self._log("info", "本次运行未达到稳态，未生成控制性能报告")
 
+    @property
+    def steady_reached(self):
+        """是否已判定达到稳态（供主循环决定是否自动停止）。"""
+        return self._reached
+
     def _report(self):
         target = self.target_flow_slm
         initial = self.initial_flow_slm
@@ -134,6 +145,12 @@ class PerformanceReporter:
                 f"{self.flow_range_max_slm:.3f} SLM"
             ),
             f"调节时间(至稳态): {self.settling_time_s:.3f} s",
+            f"稳态流量(窗口均值): {self.steady_mean:.3f} SLM",
+            f"稳态标准差(窗口): {self.steady_std:.3f} SLM",
+            (
+                f"稳态误差: {self.steady_error_slm:+.3f} SLM "
+                f"(目标 - 稳态均值)"
+            ),
             f"初始流量: {initial:.3f} SLM",
             (
                 f"超调量: {extremum_text}，{direction} "