A river ecology restoration feedback system comprises a sludge treatment device and a server. The sludge treatment device comprises a sludge suction device, a sludge conveying device and a sludge pond. The sludge suction device comprises a pulverizing head, a dirt suction pump and a sludge pipeline. The sludge treatment device is located in a bridge body above the river, the sludge suction deviceis arranged in a pier of the bridge body, and the sludge conveying device is arranged in the bridge floor. The server comprises an analysis processing unit and a communication unit. The analysis processing unit controls the work of a corresponding number of areas in the sludge pond according to the sludge suction amount of the sludge suction device, and the sludge pond conducts sludge treatment work according to the sludge suction amount. According to the river ecology restoration feedback system, through cooperation of the sludge treatment device and the server, the number of the work areas of the sludge pond is controlled according to the sludge flow, the sludge pond resource is saved, and meanwhile the sludge treatment cost is reduced.