This paper mainly discusses the sales of China’s welfare lottery at the provincial level，and makes a multi-dimensional analysis of the relevant data. Specifically，it includes lottery sales volume，lottery development index，deviation analysis between provincial sales volume proportion and GDP proportion，provincial deviation index analysis，comparison between per capita disposable income and lottery sales，and comparison of Lotto digital lottery sales among regions. Through the analysis of the above data，we can understand the problems such as the big difference in sales of welfare lottery tickets in different regions，the obvious difference in the sales volume of welfare lottery tickets per capita among provinces，and the relatively high intention of people to buy welfare lottery tickets in areas with low per capita disposable income. In addition，through the analysis of the correlation between the sales volume of welfare lottery and GDP output value of each province，the calculation formula and deviation range of welfare lottery deviation index are formulated to analyze the rationality of welfare lottery sales in each province.