This paper constructs RIP attack message by Python program in the experimental environment, and sends the attack mes-sage to the target router for routing deception, which makes the attacked router learn the wrong routing information, and then makesthe attacked router unable to realize the normal routing forwarding function. On this basis, we write packet sniffer program in Py-thon, analyze the attack message sent by the attacker, study its attack means and methods, and then take corresponding security mea-sures to enhance the security of RIP routing protocol.