In the open network environment

the security problems has already been an important factor that restricts the applicative problem of MAS.After analyzing the security problems and current status of research work

the paper proposes a security design scheme based on the MAS to construct an overall security frame in the Internet.Design and implement signature checking and sending behavior recognition.Establish of MAS port key KPI index monitoring and fast pausing of MAS port.It provides an available method to solve the secure problems in the MAS field.