As two permanent members of the United Nations Security Council, China and the U.S. have both made great contributions to the U.N. peacekeeping operations. Over the course of peacekeeping operations, however, the two countries have different priorities, principles, and influences. The U.S. has committed more in terms of finance, training, and equipment, while China has sent more personnel for peacekeeping operations. In recent years, China has also significantly increased its financial contributions and made greater efforts to train and recruit professionals in important positions. As regards peacekeeping norms, China stresses adhering to the three principles of Hammarskjöld under the precondition of respecting sovereignty and non-interference. The U.S., on the other hand, usually promotes its democratic value and has a relatively low bar for the use of force. Furthermore, the U.S. has exerted more influence than China in terms of agenda-setting for U.N. peacekeeping operations. As time progresses, China and the U.S. could complement each other with their respective advantages in U.N. peacekeeping operations and involvement in international and regional security affairs under the framework of the U.N. Therefore, the potential is huge for the two countries to collaborate on the U.N. peacekeeping issue.