It points out that SMEs should separate their niches from those of large enterprises initiatively, and then puts forward mini-niche strategy based on niche separation and deep-adaptation strategy which helps SMEs to consolidate their positions in mini-niches.

The paper studied the dangers from agriculture,the rural enterprise development,tourism,cultivation processing industry,establishment's construction and discuss the ecology principle from the choice of life form,the law of tolerance,niche principle,allelopathy of plants,community's spatial and temporal constructs,edge effect,succession fu.