Abstract: The past 100 years of the Communist Party of China is the process of it examining and recognizing opportunities of time, and seeking, creating and using the opportunities for party development and growth, which goes through the following stages: the founding in response to the time, growing and prospering with the trend by taking advantage of the time, and taking the rein of China. The fundamental reason for the development and growth of Communist Party of China in the past century is that it has formed and has been practicing the great spirit of party building, has been valuing party construction and respecting the people's needs. To continue to lead the Chinese people to realize the great rejuvenation of the Chinese nation, the Communist Party of China must correctly understand and handle the relationship between its leadership and the main force, comprehensively strengthen party construction, fulfill the purpose of serving the people wholeheartedly, and fully respect and give play to the the people.

Key words: the Communist Party of China, people, socialism, reform and opening-up, the new era