Studying the public expression texts of Fan Changjiang in KMT-controlled areas from May, 1939 when he joined the Communist Party of China to 1942 when he was transferred to CCPcontrolled areas could reveal the differences of discourse expression characteristics and strategies in the Anti-Japanese National United Front working between the communists without avowing their identities and the communists opening their identities . His public expressions facing the society, such as reviews and news releases, were mostly made in the standpoint of the whole Chinese nation and such discourses showed distinct features, such as subjectivity, neutrality, goodwill, and balance with a view of unity. Although his public expressions to patriotic journalists show certain partisan orientation and coloration, most of them were still “neutral” or “obscure”, with such partisan orientation and thought indirectly conveyed. Such discourse characteristics and strategies belong to a kind of special discourse expression in the Anti-Japanese National United Front working. The reason why he took such discourse strategies is that they contributed to better fulfllment of the Anti-Japanese National United Front task as a crypto-communist.