Happiness is an old but constantly hot topic. In order to thoroughly understand the subjective well-being among the Chinese residents，the Social Survey Center of the Public Opinion Research Laboratory in Shanghai Jiao Tong University conducted an investigation on residents’ subjective well-being in China’s 36 cities. The results indicated a high subjective well-being of our residents with an average score of 7 out of 10.It showed that family harmony was the main support for the subject well-being，while personal health，relationship with friends，and personal income were also important. According to Maslow’s hierarchy of needs，physiological needs，safety needs，love or belongingness needs，esteem needs，and self-actualization needs significantly affected the subjective well-being of residents.