diff --git a/Assets/XCharts/Runtime/Component/Main/Axis.cs b/Assets/XCharts/Runtime/Component/Main/Axis.cs
index 7fcc3061..7414fa81 100644
--- a/Assets/XCharts/Runtime/Component/Main/Axis.cs
+++ b/Assets/XCharts/Runtime/Component/Main/Axis.cs
@@ -555,7 +555,7 @@ namespace XCharts
                     int maxNum = Mathf.CeilToInt(coordinateWid / 15);
                     if (num > maxNum)
                     {
-                        m_Interval = m_ValueRange / (maxNum - 1);
+                        m_Interval *= 2;
                         num = Mathf.CeilToInt(m_ValueRange / m_Interval) + 1;
                     }
                     return num;
@@ -852,7 +852,15 @@ namespace XCharts
                         break;
                 }
             }
-            m_ValueRange = maxValue - minValue;
+            var tempRange = maxValue - minValue;
+            if (m_ValueRange != tempRange)
+            {
+                m_ValueRange = tempRange;
+                if (type == AxisType.Value && m_Interval > 0)
+                {
+                    SetComponentDirty();
+                }
+            }
         }
 
         internal void UpdateMinValue(float value, bool check)
diff --git a/Assets/XCharts/Runtime/Component/Main/Serie.cs b/Assets/XCharts/Runtime/Component/Main/Serie.cs
index 124f06c1..6421aba9 100644
--- a/Assets/XCharts/Runtime/Component/Main/Serie.cs
+++ b/Assets/XCharts/Runtime/Component/Main/Serie.cs
@@ -772,7 +772,7 @@ namespace XCharts
             }
         }
         /// <summary>
-        /// 开启大数量优化的阈值。
+        /// 开启大数量优化的阈值。只有当开启了large并且数据量大于该阀值时才进入性能模式。
         /// </summary>
         public int largeThreshold
         {