The invention discloses a leech reproduction culture tank comprising a tank body and a spawning and rest platform fixed to the inner side of the side wall of the tank body. Being provided with the spawning and rest platform, the leech reproduction culture tank integrates leech reproduction and culture and can effectively block leeches from escaping, a concealing and spawning place is provided for spawning leeches, the leeches can mate, spawn and rest quietly during reproduction, mating rate and spawning rate of the leeches are increased greatly, hollow cocoon rate and dead cocoon rate are lowered, the leeches can recover physical strength and relieve fatigue quickly and favorably after delivery, the purpose of lowering death rate of postpartum parent leeches is achieved, the culture tank has a certain function of moisture retention on leech cocoons, the problem that the fry is difficult to incubate due to dryness of the cocoons is prevented, in addition, culture personnel can take out the leech cocoons on the spawning and rest platform anytime for incubation, and operation is simplified.