Multifunctional dredge boat

The invention discloses a multifunctional dredge boat. A support of a buoyancy supporting leg is welded to a boat body. Navigation signal lamps are welded to the boat body, a cab assembly is fixedly connected with the boat body through screws, and control equipment, circuit equipment and instrument equipment are integrated in a cab. A digging arm assembly is welded to the boat body, a reamer dredge pump is connected with the digging arm assembly, and a power system is fixed on a deck of the boat body through screws. An automatic positioning pile, a compact type hydraulic lifting propeller and the boat body are connected to the reserved support through a pin shaft, and a dredge pipe is laid on the deck of the boat body. By the adoption of the structure, the multifunctional dredge boat overcomes the defects that a common dredge boat in the prior art cannot handle shallow water area and limited space operations easily in places such as rivers, lakes, channels and reservoirs in a city due to the huge size, the common dredge boat cannot be put to good use in inland waterways, energy and labor consumption is large, transporting and transferring are extremely inconvenient, dredging by small-sized machines and manual work can waste time and energy, and the cost is high.