The invention discloses an environment-friendly leech breeding method. The method includes the following steps of 1, building breeding ponds; 2, putting aquatic plants; 3, putting leeches; 4, puttingbaits; 5, conducting cleaning; 6, harvesting the leeches in different ponds separately; 7, making preparation for overwintering. Since corresponding water inlets and water outlets are formed and meanwhile original feed required by wild leeches is put at regular time, sufficient feed is provided for the leeches; since corresponding drain ports are formed and the ponds are cleaned at regular time, the sufficient oxygen content is ensured, the infection source of leech germs is also cut off, a great aquatic environment is created for the leeches, and moreover, by arranging aquatic plant layers different in hierarchy, a shady and cool environment is also provided for egg reproduction and rest of the leeches. According to the technical scheme, the breeding effect is obvious, and the survival rate of the leeches is greatly increased.