Previous better life index or other index were often built upon the concept of better life in the perspective of experts. This method is high in authority，but experts’ perception may be different from ordinary people’s perception of better life；and therefore measures different better life. The Better Life Index constructed in this study is based on the perceptions and feelings of ordinary people about better life. This study presents the whole process of the construction of the better life index，which including three sub-index：the nation & society index，family & relation index and personal material index. The results show that China’s better life index is high，but there is room for improvement in personal material index. Among the seven regions and six cities，northeast China and Beijing，Shanghai，Guangzhou and Shenzhen are the highest in the better life index. The study also found that the better life index is positively correlated with regional GDP per capita and negatively correlated with Gini Coefficient but not significant. Promoting common prosperity，eliminating polarization and poverty may help improve better life. However，this study only constructed subjective better life index，future research can further construct objective better life index，as well as a comprehensive better life index of both subjective and objective measurements.