Abstract: The important states of traditional OS are distributed into each layer of the system,which increases the difficulties of fault diagnosis and recovery.In addition,monitor processes,in the applications,run at the same privilege level as the normal processes.This is unconvenient for monitoring and restrictive mechanisms for behaviors of monitor processes are lacked.To address these problems,the paper proposes an octopus architecture which manages the states centrally and classifies the authorities.The major innovative features of the architecture are the following:Store the important states of the whole system centrally.Processes with higher privilege level,which restrict each other,monitor processes with lower privilege level.Finally,the effectiveness is validated on the Bochs simulator.