In recent years, the blind box as a trendy toy, leads the development of trendy play. Blind boxes have cut into the market of young consumers precisely, and many "blind box +" business models such as archaeological blind boxes, stationery blind boxes, beauty blind boxes, snack blind boxes, etc. have emerged rapidly. The purpose of this study is to investigate the dominant factors that influence consumers to purchase blind boxes. The research method used in this study was both hypothetical and comparative, with preliminary data obtained from a questionnaire. 30 valid questionnaires were collected. The main population was 15-25 years old (24 people, accounting for 80%). The proportion of monthly consumption between 101 and 300 yuan per month is 33.3%. Men were more likely to purchase hand-held blind box products (8, accounting for 57.2%), and women were more likely to purchase album cards (7, 43.8%). The findings revealed that for single/few-time purchasers of blind boxes, the dominant factor that influenced them to start buying blind boxes was the type of items inside the box. For multiple purchasers of blind boxes, the dominant factor that influenced them to start repeated purchases of blind boxes was gambling mentality.