Abstract With the national power rise and economic development,The PRC gradually emerge in the international nations.When the economic development of PRC driven by the overall national strength and realized the importance of the country image on national security and development.The only way is to change Chinese Army missions to Non-military operations and expand the Army skills To participate in peacekeeping operations.The PRC actively participated in peacekeeping operations,by this action to deep in the preparedness of Chinese Army and then show its influence in regional security. The PRC want to prepare to make great things,so the PRC currently changed the formation of the organization and learn from foreign experience in various peacekeeping operations.The PRC do it's best in peacekeeping action and diminish Western countries through this way to expand regional security influence and obtain greater national interest. Facing of the cross-strait situation increasingly tone down but The PRC never change it's great ambition.When The PRC participate in peacekeeping operations,by participating in international activities and organizations to disrupt our foreign policy and narrow foreign space.Then cause the Alliance fail,so people must underestimate the Conspiracy of enemy,never change attitudes of cross-strait interaction and do not forget their plot.So we must Strengthen our national defence and prepare everything about national wills to prevent our enemy to launch war.