With the changing of international situations, the interactions between countries do not only focus on politics, economy and culture but on military. Military diplomacy is a kind of action combining with military and diplomacy to reach the purpose of diplomacy in terms of military actions. However, China has played an important role in international politics and global economy because of the rising of politics and economy. They maintain their nation interest by using diverse methods of military diplomacy. From the viewpoint of China's military diplomacy, this thesis focuses on the peacekeeping actions, including the background and benefits, for the purpose of understanding China's environment, resource, intention and method in military diplomacy.