diff --git "a/\345\237\272\344\272\216Srv6\347\232\204\345\270\246\345\206\205\347\275\221\347\273\234\346\265\213\351\207\217/newTopo.py" "b/\345\237\272\344\272\216Srv6\347\232\204\345\270\246\345\206\205\347\275\221\347\273\234\346\265\213\351\207\217/newTopo.py"
new file mode 100644
index 0000000000000000000000000000000000000000..485a84f94b2d007742ab6662652f34589f3e26fc
--- /dev/null
+++ "b/\345\237\272\344\272\216Srv6\347\232\204\345\270\246\345\206\205\347\275\221\347\273\234\346\265\213\351\207\217/newTopo.py"
@@ -0,0 +1,103 @@
+#!/usr/bin/python
+import random
+import sys
+import numpy as np
+import copy
+
+def createRandomTopo(sNum):
+	sys.setrecursionlimit(1000000)
+	#create adjaMatrix
+	topoMatrix = [[0 for i in range(sNum)] for i in range(sNum)]
+	visited = [0 for i in range(sNum)]
+	#create topo randomly
+	for i in range(sNum):
+		for j in range(i+1, sNum):
+			link = random.randint(0,1)
+			topoMatrix[i][j] = link
+			topoMatrix[j][i] = link
+	#DFS
+	def DFS(v):
+		visited[v] = 1
+		for j in range(sNum):
+			if topoMatrix[v][j] == 1 and visited[j] == 0:
+				DFS(j)
+	#check the network connectivity using DFS
+	disconNode = []
+	for i in range(sNum):
+		if visited[i] == 0:
+			DFS(i)
+			disconNode.append(i)
+	#if the network is unconnected, connect each disconNode
+	for i in range(len(disconNode)-1):
+		topoMatrix[disconNode[i]][disconNode[i+1]] = 1
+		topoMatrix[disconNode[i+1]][disconNode[i]] = 1
+
+	oddCount = calOddNum(topoMatrix, sNum)
+
+	return topoMatrix, oddCount
+
+def createRandomTopoWithFixedOdds(oddNum, maxSNum, step=1):
+	sys.setrecursionlimit(1000000)
+	sNum = 2*oddNum
+	topoLists = []
+
+	while sNum <= maxSNum:
+		flag = 0
+		while flag != 1:
+			#create adjaMatrix
+			topoMatrix = g_generator_edge(10000, sNum)
+			for i in topoMatrix:
+				oddCount = calOddNum(i, sNum)
+				if oddCount == oddNum:
+					topoLists.append(i)
+					print("sNum ", sNum)
+					flag = 1
+					break
+		sNum += step
+
+	return topoLists
+
+def calOddNum(topoMatrix, sNum):
+	count = 0
+	for i in range(sNum):
+		degreeSum = 0
+		for j in range(sNum):
+			degreeSum += topoMatrix[i][j]
+		if degreeSum%2 == 1:
+			count += 1
+	return count
+
+def g_generator_edge(NUM_GRAPHS,NUM_NODES,edge_incre=1):
+	op=[]
+	NUM_GRAPHS=min(NUM_GRAPHS,int(NUM_NODES*(NUM_NODES-1)/2-NUM_NODES))
+	for i in range(NUM_GRAPHS):
+		if(i==0):
+			network_matrix=np.zeros([NUM_NODES, NUM_NODES])
+			for j in range(NUM_NODES-1):
+				network_matrix[j][j+1] = 1
+				network_matrix[j+1][j]=1
+			network_matrix[0][NUM_NODES-1]=1
+			network_matrix[NUM_NODES-1][0]=1
+			op.append(network_matrix)
+		else:
+			network_matrix=copy.deepcopy(op[i-1])
+			select=[]
+			for j in range(NUM_NODES):
+				for k in range(j+1,NUM_NODES):
+					if(network_matrix[j][k]==0):
+						select.append([j,k])
+			for l in range(edge_incre):
+				temp=select.pop(random.randint(0,len(select)-1))
+				network_matrix[temp[0]][temp[1]]=1
+				network_matrix[temp[1]][temp[0]]=1
+			op.append(network_matrix)
+	return op
+
+
+if __name__ == '__main__':
+	sNum = 5
+	topo, oddCount = createRandomTopo(sNum)
+	print(topo)
+	print(oddCount)
+	topoList = createRandomTopoWithFixedOdds(20,200,5) #each sNum has five graphs
+	print(topoList)