Abstract: Ginkgo biloba L.is a traditional economic tree species in China, and it is a common plant cultivated in agroforestry system. In order to understand the effects of different agroforestry patterns of G.biloba L.on the activities of soil enzymes, three agroforestry patterns were studied, including G.biloba L.+Wheat+Soybean (G+W+S), G.biloba L.+Mulberry (G+M) and G.biloba L.+Rape+Soybean (G+R+S). The other two planting patterns Mulberry (M) and Rape+Soybean (R+S) were used as control. The activities of soil enzymes of the five managing patterns were determined after planting three years, and their integrated activity were evaluated by using the improved Analytic Hierarchy Process (AHP). The results showed that the activities of catalase, sucrase, urease, dehydrogenase, phosphatase, polyphenol oxidase and protease in soil of the five patterns were different remarkably, and these enzymes varied significantly in different soil layer. The activities of sucrase, urease, dehydrogenase, phosphatase and protease of soil of five patterns decreased with an increase in soil layer. However, the activity of catalase and polyphenol oxidase increased, and the activities of these enzymes were the lowest among five patterns except catalase of R+S pattern. The results of integrated evaluation of soil enzyme activity showed that the integrated evaluation indicators were different significantly for the activity of soil enzymes among the five agroforestry systems. They were ordered in G+M(0.870), G+W+S(0.820), G+R+S (0500), M (0.281), R+S (0.127). Therefore, ginkgo agroforestry could increase the activities of soil enzymes, and improve soil fertility.