Leech soilless breeding method

The invention provides a leech soilless breeding method. According to the technical scheme of the leech soilless breeding method, (1) materials which are non-poisonous, have no peculiar smell, and are loose in structure, air-permeable, capable of holding moisture, and light in weight are used as soilless base materials; (2) technical processing is carried out on the soilless base materials; (3) in a breeding water area, a breeding net box is well fixed, a floating plate is arranged in the net box, the processed soilless base materials are placed on the floating plate after the soilless base materials fully absorb water, leeches on the point of oviposition are placed in the soilless base materials, and a cover plate covers the net box; (4) appropriate humidity of the soilless base materials is kept; (5) egg cocoons of the leeches are collected regularly; (6) the leeches are recovered timely after oviposition is finished. The leech soilless breeding method overcomes the defects that when an existing conventiona