Sewage suction device for pomfret culture

The utility model discloses a dirt suction device for pomfret cultivation. The dirt suction device is applied to water environment maintenance during pomfret cultivation. The sewage suction device comprises a siphon structure arranged on the side of a pomfret culture pond, a sewage suction structure fixedly installed on the siphon structure and a sewage discharge assembly arranged back to the sewage suction structure. The siphon structure comprises a base and a pressing part fixedly installed on the base. The sewage suction structure comprises a hose, a hard pipe, a sewage suction cover located below the liquid level of the culture pond and a handheld assembly fixedly installed on the hard pipe, and the handheld assembly comprises a positioning ring and a holding rod fixedly connected to the positioning ring. Pollutants in the culture pond can be semi-automatically sucked at fixed points, the structure is simple, other driving elements are not needed, the treatment of the pollutants in different areas in the