Self-expansion flood-prevention water-absorption leaking stoppage bag

The utility model belongs to the field of flood control water absorption leaking stoppage bags, and particularly relates to a self-expansion type flood control water absorption leaking stoppage bag which comprises a flood control bag body, the top end of the flood control bag body abuts against the bottom end of a first cover plate, and a connecting assembly is arranged at the front end of the flood control bag body. The connecting assembly comprises first pull rods, the four sets of first pull rods are slidably connected with first sliding grooves, the four sets of first sliding grooves are formed in one end of a second connecting block, and the four sets of first pull rods are fixedly connected with a first connecting ring; through the structural design of the connecting assembly, the function of connecting the cover plate is achieved, and the problems that when the flood control bag is used for flood control, water absorption materials need to be added into the flood control bag, then the cover plate cover