After the cooperation of Guomindang and Chinese Communist Party(CCP), CCP faced how to deal with Guomindang Government, i.e., entering Chinese Government. On this problem, CCP, Soviet Union and Guomindang implemented multiparty game because of different considerations. From the perspective of enlarging political influence, boosting own development, maintaining CCPGuomindang cooperation, CCP had the demand to participate in Chinese Government. In order to reduce Guomindang’s suspicion on CCPGuomindang cooperation, Soviet Union was unwilling to let CCP participate in Chinese Government. Guomindang upheld one party dictatorship and was unwilling to open the Government to CCP. CCP did not enter Chinese Government because of weak strength at the initial time of AntiJapanese War, although it was helpful to maintain the independence of CCP thought and organization, it made CCPGuomindang cooperation short of persistence and stability. Although Guomindang monopolized Chinese Government, Guomindang could not prevent the challenge to its one party dictatorship by CCP.