The epidemic situation in 2020 has had a great impact on all walks of life，including lottery. In the same year，lucky lottery adjusted the game，gradually stopped selling the games that contribute to the sales of lucky lottery-quick opening games and video games，and launched an upgraded version of keno games. Under the influence of these two important factors，the sales volume of welfare lottery market decreased significantly. However，in the long run，the adjustment of the game structure has brought more healthy and stable elements to the welfare lottery. Due to the game adjustment，the marketing channel，marketing content and channel expansion are also changing. In the future，we need to further strengthen the adjustment of game structure，marketing channel construction，marketing content and form，and brand construction combining public welfare and marketing.