According to the characteristics of longan cultivated in the hill and mountain regions of Maoming City, this paper analyzed the economic benefit of the simplified cultivation techniques. With 15-year-old Chuliang longan trees as materials, the economic benefit of four kinds of simplified cultivation technologies was compared and analyzed. After nine years of continuous technological application, it was found that the input costs increased by 1.62%, and the output profits increased by 56.10%; in input costs, labor cost decreased by 41.33%, pesticide cost decreased by 24.19%, and fertilizer cost increased by 33.57%.