Abstract: The rise of the energy internet is quickly changing the system architecture of electric power information network,which is faced with a series of new security challenges.To meet the higher level security capability of the future,a security architecture model that could adapt to the new generation electric power information network is built and the construction measures are given based on the principles of inheritance and innovation,autonomy and controllability,cooperative countermeasure and intelligent defense.The new generation security architecture model of power information network has made nine brand-new security demands,combined four dimensions:management,strategy,technology and role,built three platforms:research and development,test and operation,and designed a closed-loop repertoire containing six key links:classified protection, event sensor, warning scheduling, emergency response, disaster recovery and attack-defense confrontation,to achieve sustainable control of the full life cycle of information security.In the construction process of the new generation security architecture model of power information network,we need to carry out unified top-level design of information security,build a high-level professional information security team,establish an integrated new technology protection system of information security,strengthen intelligent prevention and warning ability against risk,threat and vulnerability,so as to construct a new-generation protection system of information security and promote the overall safeguarding capability of information security in the electric power industry.