To explore the influential factors and mechanism of purchasing lottery addiction of sports lottery player, 2426 sports lottery players from 10 provinces have been surveyed by means of questionnaire and mathematical statistics. Based on correlation analysis and structure equation models, the results showed that firstly, the purchasing lottery addiction has significantly positive correlation with sensation seeking, economic utility and unhealthy information dissemination, but negative with family economics. Secondly, sensation seeking, economic utility, family economics and unhealthy information...