This study defines subjective social mobility according to the changes in subjective social status，defines the difference between the current subjective social status and the past subjective social status as the perception of social mobility，and defines the difference between the future subjective social status and the current subjective social status as the social mobility expectation. Both can again distinguish between “intragenerational” and “intergenerational”，and obtain subjective social mobility within generation （intragenerational mobility perception，intragenerational mobility expectation） and intergenerational subjective social mobility （intergenerational mobility perception，intergenerational mobility expectation）. Based on this，the study analyzes the influence of subjective social mobility on the needs of a better life and the experience of a better life，and finds that in addition to the expected intergenerational mobility that can significantly reverse the prediction of the people’s personal material dimension of the good life experience，the perception/expectation of social mobility can positively predict the need for a good life and the experience of a good life.