diff --git a/src/Core/Animation/PathAnimationManager.cs b/src/Core/Animation/PathAnimationManager.cs
index f795b29..82ca6c1 100644
--- a/src/Core/Animation/PathAnimationManager.cs
+++ b/src/Core/Animation/PathAnimationManager.cs
@@ -5079,7 +5079,6 @@ namespace NavisworksTransport.Core.Animation
                 return TryCreateRealObjectPlanarRotationFromHostForward(hostForward, out rotation);
             }
 
-            var convention = GetCurrentModelAxisConvention();
             Vector3 canonicalPrevious = ToNumerics(adapter.ToCanonicalPoint(previousPoint));
             Vector3 canonicalCurrent = ToNumerics(adapter.ToCanonicalPoint(currentPoint));
             Vector3 canonicalNext = ToNumerics(adapter.ToCanonicalPoint(nextPoint));
@@ -5090,19 +5089,7 @@ namespace NavisworksTransport.Core.Animation
                 forward = canonicalNext - canonicalCurrent;
             }
 
-            Quaternion correctionQuaternion = adapter.CreateCanonicalRotationCorrection(_objectRotationCorrection);
-            if (!CanonicalPlanarPoseBuilder.TryCreateQuaternionFromForward(
-                    forward,
-                    HostCoordinateAdapter.CanonicalUpVector3,
-                    convention,
-                    correctionQuaternion,
-                    out var quaternion))
-            {
-                return false;
-            }
-
-            rotation = adapter.FromCanonicalRotation(quaternion);
-            return true;
+            return TryResolvePlanarVirtualObjectRotation(forward, out rotation);
         }
 
         private double GetAnimatedObjectRailNormalExtent(
@@ -5126,6 +5113,50 @@ namespace NavisworksTransport.Core.Animation
             return GetAnimatedObjectHeight();
         }
 
+        /// <summary>
+        /// 平面虚拟物体姿态：路径对齐（可选）+ 角度修正（始终应用，与路径无关）。
+        /// 路径方向有水平分量时对齐路径；无水平分量（纯垂直）时保持当前姿态，
+        /// 仅把角度修正叠加到当前姿态上，避免修正因路径几何而丢失。
+        /// </summary>
+        private bool TryResolvePlanarVirtualObjectRotation(Vector3 canonicalForward, out Rotation3D rotation)
+        {
+            rotation = Rotation3D.Identity;
+            var adapter = CoordinateSystemManager.Instance.CreateHostAdapter();
+            var convention = GetCurrentModelAxisConvention();
+            Quaternion correctionQuaternion = adapter.CreateCanonicalRotationCorrection(_objectRotationCorrection);
+
+            if (CanonicalPlanarPoseBuilder.TryCreateQuaternionFromForward(
+                    canonicalForward,
+                    HostCoordinateAdapter.CanonicalUpVector3,
+                    convention,
+                    correctionQuaternion,
+                    out var quaternion))
+            {
+                // 正常：路径对齐 + 角度修正
+                rotation = adapter.FromCanonicalRotation(quaternion);
+                return true;
+            }
+
+            // 纯垂直路径无水平方向：无法路径对齐，仅把角度修正叠加到当前姿态
+            LogManager.Debug("[平面虚拟物体姿态] 路径方向无水平分量，仅应用角度修正到当前姿态");
+            Quaternion currentHostQuaternion = Rotation3DToHostQuaternion(_trackedRotation);
+            Quaternion currentCanonicalQuaternion = AlignToGroundMinCrossSectionYawSearcher.HostQuaternionToCanonical(currentHostQuaternion, adapter);
+            Vector3 currentWorldForward = Vector3.Normalize(Vector3.Transform(convention.ForwardUnitVector, currentCanonicalQuaternion));
+            Vector3 currentWorldUp = Vector3.Normalize(Vector3.Transform(convention.UpUnitVector, currentCanonicalQuaternion));
+            LocalAxisPoseBuilder.ApplyLocalPreRotation(
+                convention,
+                correctionQuaternion,
+                out var correctedLocalForward,
+                out var correctedLocalUp);
+            Quaternion correctedQuaternion = LocalAxisPoseBuilder.CreateQuaternionFromLocalAxes(
+                correctedLocalForward,
+                correctedLocalUp,
+                currentWorldForward,
+                currentWorldUp);
+            rotation = adapter.FromCanonicalRotation(correctedQuaternion);
+            return true;
+        }
+
         private bool TryCreatePlanarPathRotationFromHostForward(Vector3D hostForward, out Rotation3D rotation)
         {
             rotation = Rotation3D.Identity;
@@ -5138,21 +5169,8 @@ namespace NavisworksTransport.Core.Animation
                     out rotation);
             }
 
-            var convention = GetCurrentModelAxisConvention();
             Vector3 canonicalForward = adapter.ToCanonicalVector3(new Vector3((float)hostForward.X, (float)hostForward.Y, (float)hostForward.Z));
-            Quaternion correctionQuaternion = adapter.CreateCanonicalRotationCorrection(_objectRotationCorrection);
-            if (!CanonicalPlanarPoseBuilder.TryCreateQuaternionFromForward(
-                    canonicalForward,
-                    HostCoordinateAdapter.CanonicalUpVector3,
-                    convention,
-                    correctionQuaternion,
-                    out var quaternion))
-            {
-                return false;
-            }
-
-            rotation = adapter.FromCanonicalRotation(quaternion);
-            return true;
+            return TryResolvePlanarVirtualObjectRotation(canonicalForward, out rotation);
         }