The universal education thought is the important component of Sun Yat-sen's education thought. Sun Yat-sen's thought of universal education was evolving all the time, especially during the following three periods: before the Revolution of 1911, in the first few years after the establishment of the Republic of China, and after the May 4th Movement. In the whole three stages, the latter stages is the enrichment and development of the former stages. It can be seen that, with the gradual changes of the situation at home and abroad, the fantasy of Sun Yat-sen's universal education thoughts gradually decreased, while the reasonable factors and feasible components increased. It is no coincidence that Sun Yat-sen developed old Three Democracy Righteousness into the new Three Democracy Righteousness in his later years and formulated the three cardinal policies of “allying with the Soviet Union, allying with the Chinese Communist Party and helping the peasants and workers”. The continual evolution of Sun Yat-sen's thought of universal education also played a certain role in promoting it. Sun Yat-sen's thought of universal education provided valuable ideological materials for Chinese communists, such as Mao Tse-Tung to think about the educational problems in new China and how to develop the educational cause of new China. Even so far, it still has some enlightening significance in the educational development of socialism with Chinese characteristics in the new era.