Assembled flood control water retaining block

The utility model discloses an assembly type flood control water retaining block, which relates to the technical field of flood control water retaining and comprises a conventional module and a half module, two sliding blocks are uniformly arranged on the upper side of the conventional module and the upper side of the half module, and two sliding grooves are formed in the lower side of the conventional module and the lower side of the half module. The right side of the conventional module and the rear side and the right side of the half module are all fixedly connected with dovetail blocks, and the left sides of the conventional module and the half module are all provided with dovetail grooves. By arranging the dovetail grooves, the dovetail blocks, the sliding grooves, the sliding blocks, the conventional module and the half module, the water retaining block is convenient and flexible to assemble when being used; and when not in use, water or sand is discharged for recycling and storage, so that the effects