diff --git a/Helpers/PoreDistributionAnalysis.cs b/Helpers/PoreDistributionAnalysis.cs
index 8eec7fb..91cd360 100644
--- a/Helpers/PoreDistributionAnalysis.cs
+++ b/Helpers/PoreDistributionAnalysis.cs
@@ -37,6 +37,71 @@ namespace MembranePoreTester.Helpers
         //    }
         //    return 0;
         //}
+        //public static double CalculateAveragePore(
+        //    IEnumerable<DataPoint> points,
+        //    string unit,
+        //    TestLiquid liquid)
+        //{
+        //    var sorted = points.OrderBy(p => p.Pressure).ToList();
+        //    if (sorted.Count < 2) return 0;
+
+        //    double[] pressures = sorted.Select(p => p.Pressure).ToArray();
+        //    double[] wetFlows = sorted.Select(p => p.WetFlow).ToArray();
+        //    double[] dryFlows = sorted.Select(p => p.DryFlow).ToArray();
+
+        //    // 日志文件路径（位于程序运行目录）
+        //    string logPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "PoreCalcLog.txt");
+        //    void Log(string msg)
+        //    {
+        //        try
+        //        {
+        //            File.AppendAllText(logPath, $"{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff} - {msg}{Environment.NewLine}");
+        //        }
+        //        catch { /* 忽略日志写入错误，不影响主流程 */ }
+        //    }
+
+        //    Log($"开始计算平均孔径，数据点数={sorted.Count}，单位={unit}，液体={liquid.Name}，表面张力={liquid.SurfaceTension}");
+
+        //    for (int i = 0; i < pressures.Length - 1; i++)
+        //    {
+        //        double diff1 = wetFlows[i] - dryFlows[i];
+        //        double diff2 = wetFlows[i + 1] - dryFlows[i + 1];
+
+        //        Log($"区间{i}: 压力=[{pressures[i]}, {pressures[i + 1]}], 湿膜=[{wetFlows[i]}, {wetFlows[i + 1]}], 干膜=[{dryFlows[i]}, {dryFlows[i + 1]}], diff1={diff1}, diff2={diff2}");
+
+        //        // 检查是否异号或其中之一为零
+        //        if (diff1 * diff2 < 0 || Math.Abs(diff1) < 1e-8 || Math.Abs(diff2) < 1e-8)
+        //        {
+        //            double p;
+        //            if (Math.Abs(diff1) < 1e-8)
+        //            {
+        //                p = pressures[i];
+        //                Log($"直接命中点i，压力={p}");
+        //            }
+        //            else if (Math.Abs(diff2) < 1e-8)
+        //            {
+        //                p = pressures[i + 1];
+        //                Log($"直接命中点i+1，压力={p}");
+        //            }
+        //            else
+        //            {
+        //                double t = -diff1 / (diff2 - diff1); // t 在 0~1 之间
+        //                p = pressures[i] + t * (pressures[i + 1] - pressures[i]);
+        //                Log($"线性插值: t={t}, 交点压力={p}");
+        //            }
+
+        //            if (p > 0)
+        //            {
+        //                double pore = PoreCalculator.PressureToPore(p, unit, liquid);
+        //                Log($"平均孔径计算结果: 交点压力={p} {unit}, 孔径={pore} μm");
+        //                return pore;
+        //            }
+        //        }
+        //    }
+
+        //    Log("未找到湿膜与干膜曲线的交点");
+        //    return 0;
+        //}
 
         public static double CalculateAveragePore(
     IEnumerable<DataPoint> points,
@@ -50,44 +115,49 @@ namespace MembranePoreTester.Helpers
             double[] wetFlows = sorted.Select(p => p.WetFlow).ToArray();
             double[] dryFlows = sorted.Select(p => p.DryFlow).ToArray();
 
-            const double eps = 1e-12;
+            // 日志记录
+            string logPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "PoreCalcLog.txt");
+            void Log(string msg)
+            {
+                try { File.AppendAllText(logPath, $"{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff} - {msg}{Environment.NewLine}"); }
+                catch { }
+            }
+
+            Log($"开始计算平均孔径，数据点数={sorted.Count}");
 
-            // 按压力升序查找第一个直接交点（wet == dry），找到即返回
-            // 为避免噪声或无效（0 流量）点导致的错误交点，要求两侧点在湿膜/干膜上均有有效流量
             for (int i = 0; i < pressures.Length - 1; i++)
             {
-                if (wetFlows[i] <= 0 || dryFlows[i] <= 0 || wetFlows[i + 1] <= 0 || dryFlows[i + 1] <= 0)
+                // 跳过干膜流量为0的点（避免虚假交点）
+                if (dryFlows[i] == 0 || dryFlows[i + 1] == 0)
                     continue;
 
                 double diff1 = wetFlows[i] - dryFlows[i];
                 double diff2 = wetFlows[i + 1] - dryFlows[i + 1];
-                if (diff1 * diff2 <= 0 && Math.Abs(diff2 - diff1) > eps)
+
+                Log($"区间{i}: P=[{pressures[i]}, {pressures[i + 1]}], diff1={diff1}, diff2={diff2}");
+
+                if (diff1 * diff2 < 0 || Math.Abs(diff1) < 1e-8 || Math.Abs(diff2) < 1e-8)
                 {
                     double p;
-                    if (Math.Abs(diff1) < eps)
-                    {
+                    if (Math.Abs(diff1) < 1e-8)
                         p = pressures[i];
-                    }
-                    else if (Math.Abs(diff2) < eps)
-                    {
+                    else if (Math.Abs(diff2) < 1e-8)
                         p = pressures[i + 1];
-                    }
                     else
                     {
-                        double p0 = pressures[i];
-                        double p1 = pressures[i + 1];
-                        p = p0 + (p1 - p0) * (0 - diff1) / (diff2 - diff1);
+                        double t = -diff1 / (diff2 - diff1);
+                        p = pressures[i] + t * (pressures[i + 1] - pressures[i]);
                     }
-
-                    if (p > 0)
-                        return PoreCalculator.PressureToPore(p, unit, liquid);
+                    Log($"找到交点: 压力={p} Pa");
+                    double pore = PoreCalculator.PressureToPore(p, unit, liquid);
+                    Log($"平均孔径={pore} μm");
+                    return pore;
                 }
             }
 
-            // 已移除干膜半流量回退算法：如果未找到湿膜与干膜的直接交点，则不进行半流量插值，直接返回 0
+            Log("未找到有效交点");
             return 0;
         }
-
         private static void Log(string message)
         {
             try
diff --git a/ViewModels/MainViewModel.cs b/ViewModels/MainViewModel.cs
index 7a7cd1f..f2a7a6b 100644
--- a/ViewModels/MainViewModel.cs
+++ b/ViewModels/MainViewModel.cs
@@ -211,7 +211,7 @@ namespace MembranePoreTester.ViewModels
                     }
                     if (!_suppressPressureValidation && HighLowPressure.Contains("高压") && value > 800)
                     {
-                        MessageBox.Show("高压模式,加压上限不能超过500!");
+                        MessageBox.Show("高压模式,加压上限不能超过800!");
                         return;
                     }