China's negotiating style is characterized by proposing principles for negotiation Characteruses. This essay analyzes how China bargained in the process of the ”Comprehensive Test Ban Treaty” negotiation its principles such as ”No First Use,”Negative Security Assurances,” and ”Peaceful Nuclear Explosions.” The result shows: first, China did not insist on its negotiating principles persistently, because those principles could be served for trade-offs or reserving positions; second, China could use its princides to delay the negotiation in order to achieve other goals, and then disregard the principles to complete the negotiation as planned; finally, China linked its negotiating principles with moral appeals for tactical effects.