The invention relates to the network equipment management technique and provides a mutual exclusion access method based on SNMP, which carries out exclusive management to member equipment and a system for realizing the method and member equipment; when an SNMP network management work station carries out management and configuration to the member equipment by SNMP, mutex exclusive equipment is arranged in an access control management information bank, so as to avoid that configuration failure, even configuration disturbance, is caused owning to manual operation is carried out by a user who users other modes (shell, web ) when configuration is carried out in network management and affect business; furthermore, the situation that the mutex is not normally released which is caused by other reasons and leads the member equipment to get out of control is prevented, holding time is arranged in the access control management information bank, the member equipment is only used by the SNMP network management work station in the used time section which is arranged by the SNMP network management work station.