diff --git a/testHasttable/aclinesegment.cpp b/testHasttable/aclinesegment.cpp
index 0c90676..ec882e8 100644
--- a/testHasttable/aclinesegment.cpp
+++ b/testHasttable/aclinesegment.cpp
@@ -64,6 +64,11 @@ QString ACLineSegment::getTerminalB()
     return this->terminalB;
 }
 
+void ACLineSegment::setLength(double length)
+{
+    this->conductorLength=length;
+}
+
 bool ACLineSegment::parse(QXmlStreamReader &reader)
 {
     return this->parseBasicInfo(reader);
diff --git a/testHasttable/aclinesegment.h b/testHasttable/aclinesegment.h
index cb3f0bd..0ff1fc8 100644
--- a/testHasttable/aclinesegment.h
+++ b/testHasttable/aclinesegment.h
@@ -10,6 +10,7 @@ public:
     QString getTerminalB();
     double getLength();
     QString getNamingDescription();
+    void setLength(double length);
 protected:
     QString terminalA;
     QString terminalB;
diff --git a/testHasttable/cimexporter.cpp b/testHasttable/cimexporter.cpp
index e84ad1f..0102b46 100644
--- a/testHasttable/cimexporter.cpp
+++ b/testHasttable/cimexporter.cpp
@@ -136,20 +136,20 @@ void CIMExporter::exportTo(const QString& path,const QString &rootID)
             writer<<seqN++<<seperator;
             writer<<l.fromNum<<seperator;
             writer<<l.toNum<<seperator;
-            if(l.id==rootID && static_cast<int>(l.length)==0)
-            {
-                writer<<0.01<<seperator;
-                writer<<0.01<<seperator;
-                writer<<0<<seperator;
-                writer<<0<<seperator;
-            }
-            else
-            {
+//            if(l.id==rootID && static_cast<int>(l.length)==0)
+//            {
+//                writer<<0.01<<seperator;
+//                writer<<0.01<<seperator;
+//                writer<<0<<seperator;
+//                writer<<0<<seperator;
+//            }
+//            else
+//            {
                 writer<<l.line->r<<seperator;
                 writer<<l.line->x<<seperator;
                 writer<<l.line->b1<<seperator;
                 writer<<l.line->b2<<seperator;
-            }
+//            }
             writer<<endLine;
 //            writer<<"type"<<seperator;
 //            writer<<l.id<<"\t";
diff --git a/testHasttable/element/line.cpp b/testHasttable/element/line.cpp
index 3842c36..b07a849 100644
--- a/testHasttable/element/line.cpp
+++ b/testHasttable/element/line.cpp
@@ -8,12 +8,17 @@ Line::Line(const QPair<QString,QString>& fromTo, ACLineSegment* ac, QObject *par
 }
 
 
+void Line::re_extract()
+{
+    this->extract();
+}
 
 void Line::extract()
 {
     //用YJV22-3x240
     ACLineSegment *ac=this->ac;
     double length=ac->getLength();
+    this->length=length;
 //    if((int)length==0)
 //    {
 //        std::cout<<"line length zeros "<<ac->getID().toStdString()<<std::endl;
@@ -31,5 +36,5 @@ void Line::extract()
     this->g2=g0*length/1000;
     this->b1=b0*length/1000;
     this->b2=b0*length/1000;
-    this->length=length/1000;
+
 }
diff --git a/testHasttable/element/line.h b/testHasttable/element/line.h
index f529d6f..f55244c 100644
--- a/testHasttable/element/line.h
+++ b/testHasttable/element/line.h
@@ -8,6 +8,7 @@ class Line:public Branch
 {
 public:
     Line(const QPair<QString, QString> &fromTo, ACLineSegment* ac,QObject* parent=0);
+    void re_extract();
     double length;
     ACLineSegment *ac;
 
diff --git a/testHasttable/elementreduction.cpp b/testHasttable/elementreduction.cpp
index 755fb92..0234a9e 100644
--- a/testHasttable/elementreduction.cpp
+++ b/testHasttable/elementreduction.cpp
@@ -59,6 +59,15 @@ void ElementReduction::doIt(const QString& rootID)
 
     this->merge(element,idToBranch);
     this->reduceSection();
+    //因为有线路合并，线路长度变了，所以要重新计算参数
+    foreach(BranchStruc* v,this->branchList)
+    {
+        LineStru *line=static_cast<LineStru*>(v);
+        if(line!=NULL)
+        {
+            line->line->re_extract();
+        }
+    }
 
 //    QFile file("1.xml");
 //    if(file.open(QFile::WriteOnly))
@@ -274,6 +283,7 @@ void ElementReduction::reduceSection()
                 if(lineBranch)
                 {
                     lineBranch->line->length=branch->length;
+                    lineBranch->line->ac->setLength(branch->length);//TODO:线路的这个长度还是要统一一下，否则很容易出错。
                 }else
                 {
                     std::cout<<"can not conver from BranchStruc to LineStru"<<std::endl;