Oncomelania killing device capable of releasing liquid oncomelania killing chemicals during natural water level rising and application of oncomelania killing device

The invention discloses an oncomelania killing device capable of releasing liquid oncomelania killing chemicals during natural water level rising and an application of the oncomelania killing device and belongs to the technical field of bilharziasis prevention. The oncomelania killing device capable of releasing the liquid oncomelania killing chemicals during natural water level rising comprises a chemical bottle and an umbrella-shaped cover. A thermoplastic film is arranged at the bottle mouth end of the chemical bottle and provided with a self-detaching strip. A plurality of holes are formed in the edge of the inner side of the umbrella-shaped cover. The top end of the umbrella-shaped cover is further connected with a thread. The other end of the thread is fixed to a rivet. By the adoption of the oncomelania killing device capable of releasing the liquid oncomelania killing chemicals during natural water level rising, chemical use cost is reduced, and the oncomelania killing effect is improved. The oncomelania killing device capable of releasing the liquid oncomelania killing chemicals during natural water level rising is an innovative invention which is based on natural laws and phenomena and combines the biological technique and the chemical releasing technique.