Abstract: Abstract: Business accelerator is the evolution of business incubator in the knowledge-based economy age， and mainly contributes to accelerate high technology and high potential enterprise. It is different from business incubator. Business accelerator is divided into three kinds of development patterns from its investment, which include government-sponsored, enterprise endogenous, and multiple investment type. Business accelerator is endowed with strong meaning for the construction of innovative nation.

Key words: business accelerator, development model, background