diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index 5dd34e6a..d7717f40 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -80,6 +80,8 @@ slug: /changelog
 
 ## master
 
+* (2026.02.26) 增加`Axis`的`mainAxis`参数设置主轴可控制柱图的朝向 (#331)
+* (2026.02.03) 修复`UITable`的`viewport`在不同的锚点下可能会绘制异常的问题
 * (2026.01.15) 修复`Pie`的点击有时候不响应的问题 (#357)
 * (2026.01.08) 增加`DataZoom`的`minZoomRatio`替换旧的`minShowNum` (#350)
 * (2025.11.05) 修复`Axis`的`indicatorLabel`无法隐藏的问题
diff --git a/Editor/MainComponents/AxisEditor.cs b/Editor/MainComponents/AxisEditor.cs
index 37447578..68515cc6 100644
--- a/Editor/MainComponents/AxisEditor.cs
+++ b/Editor/MainComponents/AxisEditor.cs
@@ -102,10 +102,24 @@ namespace XCharts.Editor
     }
 
     [ComponentEditor(typeof(XAxis))]
-    public class XAxisEditor : AxisEditor { }
+    public class XAxisEditor : AxisEditor
+    {
+        protected override void DrawExtendeds()
+        {
+            base.DrawExtendeds();
+            PropertyField("m_MainAxis");
+        }
+    }
 
     [ComponentEditor(typeof(YAxis))]
-    public class YAxisEditor : AxisEditor { }
+    public class YAxisEditor : AxisEditor
+    {
+        protected override void DrawExtendeds()
+        {
+            base.DrawExtendeds();
+            PropertyField("m_MainAxis");
+        }
+    }
 
     [ComponentEditor(typeof(XAxis3D))]
     public class XAxis3DEditor : AxisEditor { }
diff --git a/Runtime/Component/Axis/Axis.cs b/Runtime/Component/Axis/Axis.cs
index 527e6917..1607b460 100644
--- a/Runtime/Component/Axis/Axis.cs
+++ b/Runtime/Component/Axis/Axis.cs
@@ -100,6 +100,7 @@ namespace XCharts.Runtime
         [SerializeField] private bool m_Clockwise = true;
         [SerializeField] private bool m_InsertDataToHead;
         [SerializeField][Since("v3.11.0")] private float m_MinCategorySpacing = 0;
+        [SerializeField][Since("v3.15.0")] private bool m_MainAxis = false;
         [SerializeField] protected List<Sprite> m_Icons = new List<Sprite>();
         [SerializeField] protected List<string> m_Data = new List<string>();
         [SerializeField] protected AxisLine m_AxisLine = AxisLine.defaultAxisLine;
@@ -299,6 +300,17 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_Clockwise, value)) SetAllDirty(); }
         }
         /// <summary>
+        /// Whether it is the main axis. When both X and Y axes are of the same type, the axis set to main axis will determine the orientation, 
+        /// such as horizontal bar chart and vertical bar chart.
+        /// ||是否为主轴。当XY轴类型都相同时，设置为主轴的轴会决定朝向，如横向柱图和纵向柱图。
+        /// </summary>
+        [Since("v3.15.0")]
+        public bool mainAxis
+        {
+            get { return m_MainAxis; }
+            set { if (PropertyUtil.SetStruct(ref m_MainAxis, value)) SetAllDirty(); }
+        }
+        /// <summary>
         /// Category data, available in type: 'Category' axis.
         /// ||类目数据，在类目轴（type: 'category'）中有效。
         /// </summary>
diff --git a/Runtime/Internal/BaseChart.Component.cs b/Runtime/Internal/BaseChart.Component.cs
index c4555cf2..fccccf9e 100644
--- a/Runtime/Internal/BaseChart.Component.cs
+++ b/Runtime/Internal/BaseChart.Component.cs
@@ -429,6 +429,19 @@ namespace XCharts.Runtime
             return true;
         }
 
+        public Axis GetMainAxis()
+        {
+            foreach (var component in m_Components)
+            {
+                if (component is Axis)
+                {
+                    var axis = component as Axis;
+                    if (axis.show && axis.mainAxis) return axis;
+                }
+            }
+            return null;
+        }
+
         /// <summary>
         /// 纯类目轴。
         /// </summary>
@@ -483,7 +496,15 @@ namespace XCharts.Runtime
                 relativedAxis = null;
                 return false;
             }
-            var isY = yAxis.IsCategory() && !xAxis.IsCategory();
+            bool isY;
+            if (xAxis.type == yAxis.type)
+            {
+                isY = yAxis.mainAxis;
+            }
+            else
+            {
+                isY = yAxis.IsCategory() && !xAxis.IsCategory();
+            }
             if (isY)
             {
                 axis = yAxis;
diff --git a/Runtime/Internal/BaseChart.Custom.cs b/Runtime/Internal/BaseChart.Custom.cs
index 675cc0fa..c0a4b671 100644
--- a/Runtime/Internal/BaseChart.Custom.cs
+++ b/Runtime/Internal/BaseChart.Custom.cs
@@ -11,33 +11,61 @@ namespace XCharts.Runtime
         public virtual void GetSeriesMinMaxValue(Axis axis, int axisIndex, out double tempMinValue, out double tempMaxValue)
         {
             var needAnimationData = !axis.context.needAnimation;
+            bool isX = false, isY = false, isZ = false;
+            tempMinValue = 0;
+            tempMaxValue = 0;
             if (axis is XAxis3D)
-            {
-                SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
-            }
+                isX = true;
             else if (axis is ZAxis3D)
             {
-                SeriesHelper.GetZMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                isZ = true;
             }
             else if (axis is YAxis3D)
             {
-                SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                isY = true;
             }
             else if (IsAllAxisValue())
             {
-                if (axis is XAxis)
+                var mainAxis = GetMainAxis();
+                if (mainAxis == null)
                 {
-                    SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                    if (axis is XAxis)
+                    {
+                        isX = true;
+                    }
+                    else
+                    {
+                        isY = true;
+                    }
                 }
                 else
                 {
-                    SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                    if (axis == mainAxis)
+                    {
+                        isX = true;
+                    }
+                    else
+                    {
+                        isY = true;
+                    }
                 }
             }
             else
+            {
+                isY = true;
+            }
+            if (isX)
+            {
+                SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+            }
+            else if (isY)
             {
                 SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
             }
+            else if(isZ)
+            {
+                SeriesHelper.GetZMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+            }
             AxisHelper.AdjustMinMaxValue(axis, ref tempMinValue, ref tempMaxValue, true);
         }
     }