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Water-fertilizer management is one of the most important parts in the realization of green leafy vegetables precise cultivation.This paper mainly focus on the problem of manual records are time-consuming and difficult to maintain,introduced to apply Personal Digital Assistant (PDA) into the whole process of green leafy vegetables water-fertilizer management.By the methods of real-time gaining of the site environment data,dynamical identifying the greenhouse ID and long-distance data transmission between PDAand database server water-fertilizer management in the green leafy vegetables production can be realized.The results show that the efficiency of green leafy vegetable water-fertilizer management can be improved by PDA-based solution.