Utilizing data collected in the survey of China’s Family Happiness Development Index by Renmin University of China and China Population Welfare Foundation，this article explores the factors affecting the happiness of China’s families. There are four dimensions of the factors affecting family happiness:
income and housing estate are the most important factors in economic dimension; physical and mental health is the foundation of a happy family; higher education，better relationship and more leisure will increase the happiness level; better social security and social network will secure the family happiness. Differing from the existing Happiness Indexes which evaluate happiness from individual level or regional level，this article focuses on‘family’as the study object to construct the‘Family Happiness Index’to evaluate the capability of becoming happier instead of assessing the status of happiness. Based on the four dimensions，including economics，health，civilization and society，this index consists of 35 indicators with a combination of subjective and objective factors.