Ecological wetland entrance control device based on mountain torrent ditch

The ecological wetland entrance control device comprises a retaining wall arranged between a river and a wetland system and a floating body box arranged in the river in a floating mode, a water inlet hole is formed in the lower portion of the retaining wall, a water inlet is formed in the side wall of the floating body box, and a water outlet is formed in the side wall of the floating body box. The bottom of the floating body box is connected with the water inlet hole through a pipeline, and the elevation of the bottom of a water inlet of the floating body box is lower than the water level of a river. According to the ecological wetland entrance control device, a river and a wetland system are separated by arranging the retaining wall, water entering the wetland system is surface water by arranging the floating body box which automatically ascends and descends along with the change of the water level, the flow rate of water entering the wetland system is stable, and collapse of the wetland system cannot be ca