diff --git a/util/blueprint/blueprint_test.go b/util/blueprint/blueprint_test.go
index 6e9aa5b..3da7b33 100644
--- a/util/blueprint/blueprint_test.go
+++ b/util/blueprint/blueprint_test.go
@@ -11,8 +11,8 @@ func TestExecMgr(t *testing.T) {
 		t.Fatalf("init failed,err:%v", err)
 	}
 
-	graphTest1 := bp.Create("testMath")
-	err = graphTest1.Do(EntranceID_IntParam, 1, 2, 3)
+	graphTest1 := bp.Create("testSwitch")
+	err = graphTest1.Do(EntranceID_IntParam, 2, 1, 3)
 	if err != nil {
 		t.Fatalf("Do EntranceID_IntParam failed,err:%v", err)
 	}
diff --git a/util/blueprint/exec.go b/util/blueprint/exec.go
index beb1636..cab58b0 100644
--- a/util/blueprint/exec.go
+++ b/util/blueprint/exec.go
@@ -478,6 +478,15 @@ func (en *BaseExecNode) GetOutPortArrayLen(index int) Port_Int {
 }
 
 func (en *BaseExecNode) DoNext(index int) error {
+	// 记录之前的上下文，执行完后需要恢复
+	preExContext := en.ExecContext
+	preExecNode := en.execNode
+	
+	defer func() {
+		en.ExecContext = preExContext
+		en.execNode = preExecNode
+	}()
+
 	// -1 表示中断运行
 	if index == -1 {
 		return nil
diff --git a/util/blueprint/mathnode.go b/util/blueprint/mathnode.go
index c402cf8..e5dce14 100644
--- a/util/blueprint/mathnode.go
+++ b/util/blueprint/mathnode.go
@@ -11,8 +11,10 @@ func init() {
 	RegExecNode(&MulInt{})
 	RegExecNode(&DivInt{})
 	RegExecNode(&ModInt{})
+	RegExecNode(&RandNumber{})
 }
 
+// AddInt 加(int)
 type AddInt struct {
 	BaseExecNode
 }
@@ -51,6 +53,7 @@ func (em *AddInt) Exec() (int, error) {
 	return -1, nil
 }
 
+// SubInt 减(int)
 type SubInt struct {
 	BaseExecNode
 }
@@ -102,6 +105,7 @@ func (em *SubInt) Exec() (int, error) {
 	return -1, nil
 }
 
+// MulInt 乘(int)
 type MulInt struct {
 	BaseExecNode
 }
@@ -140,6 +144,7 @@ func (em *MulInt) Exec() (int, error) {
 	return -1, nil
 }
 
+// DivInt 除(int)
 type DivInt struct {
 	BaseExecNode
 }
@@ -198,6 +203,7 @@ func (em *DivInt) Exec() (int, error) {
 	return -1, nil
 }
 
+// ModInt 取模(int)
 type ModInt struct {
 	BaseExecNode
 }
@@ -239,6 +245,7 @@ func (em *ModInt) Exec() (int, error) {
 	return -1, nil
 }
 
+// RandNumber 范围随机[0,99]
 type RandNumber struct {
 	BaseExecNode
 }
diff --git a/util/blueprint/node.go b/util/blueprint/node.go
index beb929a..18aa46b 100644
--- a/util/blueprint/node.go
+++ b/util/blueprint/node.go
@@ -89,19 +89,19 @@ func (en *execNode) exec(gr *Graph) (int, error) {
 		return -1, err
 	}
 
-	defer func() {
-		inPort, outPort := node.GetPorts()
-		debugString := "inPort:"
-		for i := 0; i < len(inPort); i++ {
-			debugString += fmt.Sprintf("%+v,", inPort[i])
-		}
-		debugString += "   outPort:"
-		for i := 0; i < len(outPort); i++ {
-			debugString += fmt.Sprintf("%+v,", outPort[i])
-		}
+	//defer func() {
+	inPort, outPort := node.GetPorts()
+	debugString := "inPort:"
+	for i := 0; i < len(inPort); i++ {
+		debugString += fmt.Sprintf("%+v,", inPort[i])
+	}
+	debugString += "   outPort:"
+	for i := 0; i < len(outPort); i++ {
+		debugString += fmt.Sprintf("%+v,", outPort[i])
+	}
 
-		fmt.Printf("exec node %s,%s\n", en.execNode.GetName(), debugString)
-	}()
+	fmt.Printf("exec node %s,%s\n", en.execNode.GetName(), debugString)
+	//}()
 
 	return e.Exec()
 }
diff --git a/util/blueprint/sysnodes.go b/util/blueprint/sysnodes.go
index 2b49eae..87439b3 100644
--- a/util/blueprint/sysnodes.go
+++ b/util/blueprint/sysnodes.go
@@ -21,6 +21,13 @@ func init() {
 	RegExecNode(&GetArrayInt{})
 	RegExecNode(&GetArrayString{})
 	RegExecNode(&GetArrayLen{})
+
+	RegExecNode(&BoolIf{})
+	RegExecNode(&GreaterThanInteger{})
+	RegExecNode(&LessThanInteger{})
+	RegExecNode(&EqualInteger{})
+	RegExecNode(&RangeCompare{})
+	RegExecNode(&Probability{})
 }
 
 type Entrance_ArrayParam struct {
@@ -226,6 +233,7 @@ func (em *GetArrayLen) Exec() (int, error) {
 	return -1, nil
 }
 
+// BoolIf 布尔判断
 type BoolIf struct {
 	BaseExecNode
 }
@@ -252,6 +260,7 @@ func (em *BoolIf) Exec() (int, error) {
 	return 0, nil
 }
 
+// GreaterThanInteger 大于(整型) >
 type GreaterThanInteger struct {
 	BaseExecNode
 }
@@ -302,6 +311,7 @@ func (em *GreaterThanInteger) Exec() (int, error) {
 	return 0, nil
 }
 
+// LessThanInteger 小于(整型) <
 type LessThanInteger struct {
 	BaseExecNode
 }
@@ -352,6 +362,7 @@ func (em *LessThanInteger) Exec() (int, error) {
 	return 0, nil
 }
 
+// EqualInteger 等于(整型)==
 type EqualInteger struct {
 	BaseExecNode
 }
@@ -387,6 +398,7 @@ func (em *EqualInteger) Exec() (int, error) {
 	return 0, nil
 }
 
+// RangeCompare 范围比较<=
 type RangeCompare struct {
 	BaseExecNode
 }
@@ -421,6 +433,7 @@ func (em *RangeCompare) Exec() (int, error) {
 	return 0, nil
 }
 
+// Probability 概率判断(万分比)
 type Probability struct {
 	BaseExecNode
 }
@@ -430,7 +443,6 @@ func (em *Probability) GetName() string {
 }
 
 func (em *Probability) Exec() (int, error) {
-
 	inPortProbability := em.GetInPort(1)
 	if inPortProbability == nil {
 		return -1, fmt.Errorf("GreaterThanInteger inParam 1 not found")