“Sense of gain” is a social demand that people expect to develop equity，justice and meet their needs for a better life. It is closely related to the continuous pursuit and satisfaction of people’s needs for a better life. Based on the mental representation of the concepts of sense of gain and needs for a better life，this report used the data of CASS-IntellVision Better Life Survey 2019，to investigate the current situation of the public’s sense of gain and needs for a better life，to test their significant differences in gender，age，level of education，income，etc，and to exolore the influences of sense of gain on the needs for a better life. The results showed that people’s overall sense of gain and needs for a better life were both high，and there were significant differences in demographic variables. At the same time，there was a significant correlation between each dimension of sense of gain and each dimension of needs for a better life. Further research found that various dimensions of sense of gain could positively predict the overall needs for a better life. Specifically，gaining content，gaining environment and gaining path had significant positive effects on needs for a better life at all levels，but the impacts of gaining sharing and gaining experience were different.