diff --git a/Student/task2/demo/go_upstairs_gen.cpp b/Student/task2/demo/go_upstairs_gen.cpp
index 7c11b5c..f680b52 100644
--- a/Student/task2/demo/go_upstairs_gen.cpp
+++ b/Student/task2/demo/go_upstairs_gen.cpp
@@ -22,7 +22,7 @@
 
 int main() {
   auto module = new Module("SysY code");  // module name是什么无关紧要
-  auto builder = new IRBuilder(nullptr, module);
+  auto builder = new IRStmtBuilder(nullptr, module);
   Type *Int32Type = Type::get_int32_type(module);
 
   // 全局数组,num,x
diff --git a/include/SysYFIR/IRStmtBuilder.h b/include/SysYFIR/IRStmtBuilder.h
index 9bcc736..69e99c9 100644
--- a/include/SysYFIR/IRStmtBuilder.h
+++ b/include/SysYFIR/IRStmtBuilder.h
@@ -5,13 +5,13 @@
 #include "Instruction.h"
 #include "Value.h"
 
-class IRBuilder {
+class IRStmtBuilder {
 private:
     BasicBlock *BB_; 
     Module *m_;
 public:
-    IRBuilder(BasicBlock *bb, Module *m) : BB_(bb), m_(m) {};
-    ~IRBuilder() = default;
+    IRStmtBuilder(BasicBlock *bb, Module *m) : BB_(bb), m_(m) {};
+    ~IRStmtBuilder() = default;
     Module *get_module(){return m_;}
     BasicBlock *get_insert_block() { return this->BB_; }
     void set_insert_point(BasicBlock *bb) { this->BB_ = bb; } //在某个基本块中插入指令
diff --git a/include/SysYFIRBuilder/IRBuilder.h b/include/SysYFIRBuilder/IRBuilder.h
index 68a6031..67afb3a 100644
--- a/include/SysYFIRBuilder/IRBuilder.h
+++ b/include/SysYFIRBuilder/IRBuilder.h
@@ -69,7 +69,7 @@ private:
     std::vector<std::map<std::string, Value *>> name2func;
 };
 
-class SysYFBuilder: public SyntaxTree::Visitor
+class IRBuilder: public SyntaxTree::Visitor
 {
 private:
     virtual void visit(SyntaxTree::InitVal &) override final;
@@ -95,13 +95,13 @@ private:
     virtual void visit(SyntaxTree::BreakStmt &) override final;
     virtual void visit(SyntaxTree::ContinueStmt &) override final;
 
-    IRBuilder *builder;
+    IRStmtBuilder *builder;
     Scope scope;
     std::unique_ptr<Module> module;
 public:
-    SysYFBuilder(){
+    IRBuilder(){
         module = std::unique_ptr<Module>(new Module("SysYF code"));
-        builder = new IRBuilder(nullptr, module.get());
+        builder = new IRStmtBuilder(nullptr, module.get());
         auto TyVoid = Type::get_void_type(module.get());
         auto TyInt32 = Type::get_int32_type(module.get());
         auto TyInt32Ptr = Type::get_int32_ptr_type(module.get());
diff --git a/src/SysYFIRBuilder/IRBuilder.cpp b/src/SysYFIRBuilder/IRBuilder.cpp
index 8a07fb6..3890091 100644
--- a/src/SysYFIRBuilder/IRBuilder.cpp
+++ b/src/SysYFIRBuilder/IRBuilder.cpp
@@ -17,7 +17,7 @@ Type *FLOAT_T;
 Type *INT32PTR_T;
 Type *FLOATPTR_T;
 
-void SysYFBuilder::visit(SyntaxTree::Assembly &node) {
+void IRBuilder::visit(SyntaxTree::Assembly &node) {
     VOID_T = Type::get_void_type(module.get());
     INT1_T = Type::get_int1_type(module.get());
     INT32_T = Type::get_int32_type(module.get());
@@ -31,44 +31,44 @@ void SysYFBuilder::visit(SyntaxTree::Assembly &node) {
 
 // You need to fill them
 
-void SysYFBuilder::visit(SyntaxTree::InitVal &node) {}
+void IRBuilder::visit(SyntaxTree::InitVal &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::FuncDef &node) {}
+void IRBuilder::visit(SyntaxTree::FuncDef &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::FuncFParamList &node) {}
+void IRBuilder::visit(SyntaxTree::FuncFParamList &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::FuncParam &node) {}
+void IRBuilder::visit(SyntaxTree::FuncParam &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::VarDef &node) {}
+void IRBuilder::visit(SyntaxTree::VarDef &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::LVal &node) {}
+void IRBuilder::visit(SyntaxTree::LVal &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::AssignStmt &node) {}
+void IRBuilder::visit(SyntaxTree::AssignStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::Literal &node) {}
+void IRBuilder::visit(SyntaxTree::Literal &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::ReturnStmt &node) {}
+void IRBuilder::visit(SyntaxTree::ReturnStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::BlockStmt &node) {}
+void IRBuilder::visit(SyntaxTree::BlockStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::EmptyStmt &node) {}
+void IRBuilder::visit(SyntaxTree::EmptyStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::ExprStmt &node) {}
+void IRBuilder::visit(SyntaxTree::ExprStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::UnaryCondExpr &node) {}
+void IRBuilder::visit(SyntaxTree::UnaryCondExpr &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::BinaryCondExpr &node) {}
+void IRBuilder::visit(SyntaxTree::BinaryCondExpr &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::BinaryExpr &node) {}
+void IRBuilder::visit(SyntaxTree::BinaryExpr &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::UnaryExpr &node) {}
+void IRBuilder::visit(SyntaxTree::UnaryExpr &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::FuncCallStmt &node) {}
+void IRBuilder::visit(SyntaxTree::FuncCallStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::IfStmt &node) {}
+void IRBuilder::visit(SyntaxTree::IfStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::WhileStmt &node) {}
+void IRBuilder::visit(SyntaxTree::WhileStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::BreakStmt &node) {}
+void IRBuilder::visit(SyntaxTree::BreakStmt &node) {}
 
-void SysYFBuilder::visit(SyntaxTree::ContinueStmt &node) {}
+void IRBuilder::visit(SyntaxTree::ContinueStmt &node) {}
diff --git a/src/main.cpp b/src/main.cpp
index f98d4a7..fd1336f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -14,7 +14,7 @@ void print_help(const std::string& exe_name) {
 
 int main(int argc, char *argv[])
 {
-    SysYFBuilder builder;
+    IRBuilder builder;
     SysYFDriver driver;
     SyntaxTreePrinter printer;
     ErrorReporter reporter(std::cerr);