The invention provides a spliced water tank, and belongs to the technical field of kitchen utensils. The spliced water tank comprises a tank cabinet and square water tank bodies, a groove is formed in the upper end of the tank cabinet, and the multiple water tank bodies are located in the groove side by side; a stopping edge assembly is arranged at the upper edge of each water tank body and comprises fixed stop edges on three sides and a movable stop edge on one side, vertically-formed strip-shaped holes and positioning holes are formed in the portions, close to the movable stopping edges, of the wall of the water tank bodies, sliding rods which can be inserted into the strip-shaped holes are arranged at the movable stopping edges, detachable limiting pieces are connected to the ends, inserted into the strip-shaped holes, of the sliding rods, supporting plates are arranged below the movable stopping edges and fixed to the bottoms of the outer sides of the water tank bodies, first springs are arranged between the movable stopping edges and the supporting plates, connecting plates vertically moving along with the first springs are arranged on the first springs, second pressed springs are connected to the sides, close to the walls of the water tank bodies, of the connecting plates, and connectors are connected to the outer ends of the second springs. The spliced water tank is formed by splicing the multiple water tank bodies, is convenient to disassemble and assemble and can be combined by persons at will.