The invention discloses a regular dredging device for pond bottom. The regular dredging device comprises a vehicle body, a sludge hopper and a mechanical arm, wherein a sling is arranged at the end, away from the vehicle body, of the mechanical arm, a shoveling hopper is arranged at the end, away from the mechanical arm, of the sling, the shoveling hopper comprises a left hopper body and a right hopper body which are matched with each other, a mounting frame is arranged between the shoveling hopper and the sling, two sets of clamping mechanisms are arranged on the mounting frame, symmetrically arranged and used for driving the left hopper and the right hopper correspondingly, and each clamping mechanism comprises a gear I rotationally arranged on the mounting frame, a connecting rod I with one end fixedly connected with the gear I, a connecting rod II with one end hinged to the bottom of the mounting frame and a connecting rod III hinged between the connecting rod II and the connecting rod I, the hoppers are arranged on the connecting rods II, the connecting rods II are located between the hoppers and the connecting rods III, the gears I in the two sets of clamping mechanisms are meshed with each other, a gear II meshed with one of the first gears is rotationally arranged on the mounting frame, and a submersible motor for driving the gear II to rotate is arranged on the mounting frame. According to the device, the sludge cleaning efficiency can be improved.