diff --git a/SourceCode/Code2026/CoreLibrary/AecDbSlab.cpp b/SourceCode/Code2026/CoreLibrary/AecDbSlab.cpp
index 16c35b8..220440b 100644
--- a/SourceCode/Code2026/CoreLibrary/AecDbSlab.cpp
+++ b/SourceCode/Code2026/CoreLibrary/AecDbSlab.cpp
@@ -203,6 +203,9 @@ DLLIMPEXP AcDbCurve* GetOffsetCurve(AcDbCurve* pCurve,double dOffset,bool bGetIn
 		}
 		return pCurveT;
 	}
+
+	FreeBuffer(0,arCurOff1);
+	FreeBuffer(0,arCurOff2);
 	return NULL;
 }
 
@@ -290,9 +293,13 @@ AcDbRegion* CreatePipeRegion(AcDbCurve* pOutSide,AcDbCurve* pInSide)
 	Acad::ErrorStatus es;
 	if ( Acad::eOk == (es = pRegOut->booleanOper(AcDb::kBoolSubtract,pRegIns)))
 	{
+		//booleanOper 不接管第二个操作数
+		delete pRegIns;
 		return pRegOut;
 	}
 
+	delete pRegIns;
+	delete pRegOut;
 	return NULL;
 }
 
@@ -922,6 +929,7 @@ bool AecDbXSlab::SetRegionSlab(LPCTSTR pszPoint2ds,double dThick,double dBomEl,c
 			pPl->explode(arCurPtrs);
 
 			AcDbRegion::createFromCurves(arCurPtrs,arRegPtrs);
+			FreeBuffer(0,arCurPtrs);	//explode 碎片不在数据库中，建完截面即释放
 			if (!arRegPtrs.isEmpty())
 			{
 				AcDbRegion* pReg = NULL;
@@ -1273,6 +1281,7 @@ bool AecDbXSlab::SetEllipseBasin(double dRmaj,double radiusRatio,double dBomThic
 	pEllipse->getOffsetCurves(dWallWidth,arCurPtrs);
 	
 	AcDbRegion::createFromCurves(arCurPtrs,arRegPtrs);
+	FreeBuffer(0,arCurPtrs);	//offset 曲线只用于建截面
 
 	if (arRegPtrs.isEmpty())
 	{
@@ -1300,6 +1309,10 @@ bool AecDbXSlab::SetEllipseBasin(double dRmaj,double radiusRatio,double dBomThic
 		SetBaseCurve(&lnPath);
 	}
 
+	//只用到第一个截面，其余自行释放
+	for (int i = 1;i < arRegPtrs.length();i++)
+		delete (AcDbRegion*)arRegPtrs.at(i);
+
 	ptOrg += vt;
 	GetSpecialtyData()->SetAt(KEY_ORGPT,ptOrg,TRUE);
 	GetSpecialtyData()->SetAt(KEY_RAD,dRmaj);
@@ -1551,6 +1564,10 @@ int AecDbXSlab::PeelBasinWall(AcDbVoidPtrArray& arWallPtrs)
 						arWallPtrs.append(pWall);
 					}
 				}
+
+				//SetBaseCurve 内部会 clone，碎片用完即释放
+				FreeBuffer(0,arPtrs);
+				pBaseCrv = NULL;
 			}
 			break;
 		}
@@ -1774,10 +1791,8 @@ bool AecDbXSlab::IsPointInSide(const AcGePoint3d& ptOn) const
 
 				delete [] pfPtx;
 				delete [] pfPty;
-				//delete pPl;
+				delete pShapeCurve;
 
-				//pPl->setColorIndex(1);
-				//AddToModelSpace(pPl);
 				return bIn > 0 ? true : false;
 			}
 		}
@@ -2304,6 +2319,11 @@ Acad::ErrorStatus AecDbXSlab::Draw2d(AcGiDraw &dc) const
 					dc.DrawEntity(pPl);
 					Add2DBuffer(pPl);
 				}
+				else
+				{
+					//未进缓存，需自行释放
+					delete pShape;
+				}
 			}
 
 			DrawHatch(dc);
@@ -2360,6 +2380,9 @@ Acad::ErrorStatus AecDbXSlab::Draw2d(AcGiDraw &dc) const
 		if (dPlotW > 1.e-3)
 		{
 			AcDbCircle* pCir = AcDbCircle::cast(pShape);
+			AcDbEllipse* pElp = AcDbEllipse::cast(pShape);
+			AcDbPolyline* pPlT = AcDbPolyline::cast(pShape);
+
 			if (pCir != NULL)
 			{
 				AcGePoint3d ptCen = pCir->center();
@@ -2380,24 +2403,28 @@ Acad::ErrorStatus AecDbXSlab::Draw2d(AcGiDraw &dc) const
 				pPl->setConstantWidth(dPlotW);
 				dc.DrawEntity(pPl);
 				Add2DBuffer(pPl);
-			}
 
-			AcDbEllipse* pElp = AcDbEllipse::cast(pShape);
-			if (pElp != NULL)
+				//进缓存的是新建的 pPl，原始圆需自行释放
+				delete pShape;
+			}
+			else if (pElp != NULL)
 			{
 				//椭圆暂时不宽度显示
 				pShape->setColorIndex(nColor);
 				dc.DrawEntity(pShape);
 				Add2DBuffer(pShape);
 			}
-
-			AcDbPolyline* pPl = AcDbPolyline::cast(pShape);
-			if (pPl != NULL)
+			else if (pPlT != NULL)
 			{
-				pPl->setColorIndex(nColor);
-				pPl->setConstantWidth(dPlotW);
-				dc.DrawEntity(pPl);
-				Add2DBuffer(pPl);
+				pPlT->setColorIndex(nColor);
+				pPlT->setConstantWidth(dPlotW);
+				dc.DrawEntity(pPlT);
+				Add2DBuffer(pPlT);
+			}
+			else
+			{
+				//未进缓存，需自行释放
+				delete pShape;
 			}
 		}
 		else
@@ -4648,11 +4675,25 @@ void AecDbXSlab::DrawHatch(AcGiDraw &dc) const
 	}
 
 	AcDbCurve *pCurve = KTCADUtilityEx::ConvertBoundCurve(arEntClnPtrs, arRelt);
-	if (!pCurve) return;
+
+	//ConvertBoundCurve 只接管部分克隆，未被接管的需自行释放
+	for (int i = 0; i < arEntClnPtrs.length(); i++)
+	{
+		AcDbEntity *pCln = (AcDbEntity *)arEntClnPtrs.at(i);
+		if (pCln != NULL && arRelt.find(pCln) == -1)
+			delete pCln;
+	}
+	arEntClnPtrs.removeAll();
+
 	FreeBuffer(0, arRelt);
+	if (!pCurve) return;
 
 	AcDbPolyline *pPl = AcDbPolyline::cast(pCurve);
-	if (!pPl) return;
+	if (!pPl)
+	{
+		DELETE_PTR(pCurve);
+		return;
+	}
 
 	pPl->setElevation(.0);
 	pPl->setClosed(Adesk::kTrue);
@@ -5100,6 +5141,8 @@ bool AecDbXSlab::SetProperties(SimpleProperty::PropertySetByName & properties)
 				AcDbLine tmpLine(ptCen, ptCen - AcGeVector3d::kZAxis * dT);
 				SetBaseCurve(&tmpLine);
 				SetSection(pXYPoly, ptCen);
+				//SetSection 不接管入参，用完即释放
+				delete pXYPoly;
 			}
 			SetAt(KEY_BOMTHICK, dT);
 		}