Abstract:This article builds an evaluation system based on the dimensions of innovation, growth, overall and benefit of the digital economy industry, measures the development level of the digital economy industry in China's provinces and cities. Taking this as the outcome variable, the fuzzy set qualitative comparative analysis method is used to analyze the complex causal relationship between the business environment and the development of the digital economy industry. The results show that: (1) The business environment that affects the development The same level of the regional digital economy industry can be reached by varieties of business environment and single factor needs to work in synergy with other factors. There are four recipes of business environment that can promote high level of digital economy industry, including the innovation-led type with digital infrastructure as the core and government incentives, the multiple co-promotion type with digital infrastructure and rule of law as the core under market-led, the innovation-led type with digital infrastructure and rule of law at the core under government regulations, the market-driven with digital infrastructure and the rule of law as the core under government regulations; (2) The level of digital infrastructure construction and the rule of law are the core business environment elements that drive the development of the digital economy industry; (3) Over regulation will hinder the development of the digital economy industry.