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Taking the planting area of the tea Xinyang Maojian as an example, using the Analytic Hierarchy Process (AHP) to determine the zoning index weight, combined with the fuzzy comprehensive evaluation method, the fuzzy membership function and the fuzzy membership of the weighted average are calculated, and then the comprehensive regionalization index is obtained, thus to conduct the agricultural climate regionalization of the tea planting area. The results show that the comprehensive indexes in Xinyang, Gushi, Shangcheng, Xinxian, Jigongshan Mountain, etc., are greater than or equal to 0.60, belonging to the suitable planting area; those in Luoshan and Guangshan are between 0.45 and 0.59, belonging to the sub suitable planting area, in which the planting area of Xinyang Maojian is large, but the quality is slightly inferior to the suitable planting areas. Xixian, Huaibin, and Huangchuan, with index value being less than 0.45, are not suitable for planting tea, in which the tea planting area is small, and the tea quality is poor.