Abstract: MAO Zedong made a lot of investigations in his life, not only had significant impact on Chinese revolution and construction, but also summarized mature theory, which is of great significance to solve the realistic issue at present. Because of different historical circumstances, social tasks and personal situation, MAO took different methods of investigation before and after the founding of PRC, leading to different results. Reflecting on the pros and cons, we should persist in mass line, push forward the construction of inner-party democracy and peoples democracy, deepen the reform of personnel system, and strengthen the learning of professional knowledge.

Key words: MAO Zedong, survey and research, method, comparison

摘要： 毛泽东一生做了大量调查研究，不仅在历史上对中国的革命和建设产生了重大影响，而且从中总结出成熟的理论，对解决当前我国社会的现实问题具有重要指导作用。由于具体的历史环境、社会任务、个人处境等不同，毛泽东在建国前后采取了不同的调查研究方法，产生了不同效果。反思利弊得失，必须坚持群众路线，必须推进党内民主和人民民主建设，必须深化干部人事制度改革，必须加强各级领导专业知识的学习。

关键词: 毛泽东, 调查研究, 方法, 比较