With the promotion of network safety, information management and electric power industry information, information and communication safety has become an important part of power system network safety and the safety requirements of electric system information has improved constantly. Through expounding the “6s” lean management theory and combining with the actual situation of electric power enterprise information and communication safety, this paper put forward safety defense measures of electric system information and communication network, realized the normality preservation of information and communication safety, established the comprehensive “6 dimensions” safety production defense system, supported the construction of information and communication safety defense system.