Abstract: The study of Party's strategies in revolutionary period from 1921-1927 is a very important field in Party's history study. Among all concrete strategies, the essential one is "based on workers and farmers' movement, seeking a friendly cooperation between Guoming Party and Communist Party and adopting civil revolution as the major approach". The strategy has roughly undergone the following stages :eg, embryonic stage , formation stage and tortuous development stage. It is the essence and core of Party's bas...