Significance: It ensured the anti-Japanese war of the whole nation, realized national unity and led China to victory. War of Resistance against Japanese Aggression carried out the anti-Japanese national united front based on the cooperation between Kuomintang and Communist Party advocated by China and won the final victory. In order to establish, maintain and develop the anti-Japanese national united front, China creatively put forward and formulated a set of theories, policies and strategies, and accumulated rich historical experience in the practice of unity and cooperation between the Kuomintang and the Communist Party in jointly fighting against Japanese imperialist aggression.