Water conservancy river channel trash holding device

The utility model discloses a water conservancy riverway trash holding device which comprises stand columns, the two stand columns are connected with a trash holding net in a sliding mode, a collecting box is fixed to the outer wall of one side of the trash holding net through bolts, an auger is rotationally connected to the inner wall of the collecting box through a sealing bearing, and a driven bevel gear is welded to the outer wall of the auger. A motor is fixed to the outer wall of the top of the collecting box through a bolt, a long rod is installed at the output end of the motor through a coupler, and a driving bevel gear is welded to the bottom end of the long rod. A driven bevel gear can drive an auger to rotate to convey garbage, the collected garbage can be conveyed to the bank side of a river channel through a cleaning door, manual shoveling is not needed, more convenience is achieved, a first hydraulic cylinder can pull a movable base to move till a push plate is attached to a trash holding net, a