Provided is an integrally assembled sink, which includes a first frame made of a first material and a second sink body made of a second material, wherein the first frame is open at an upper end and a lower end and it has an upper opening at the upper end; and the second sink body is a container with a base and a top opening at its top. The first frame is sleeved on the second sink body, and an inside wall of the upper opening of the first frame is aligned with the inside wall of the second sink body. Several sets of bumps for hanging are arranged on the inside wall of the first frame, and each set of bumps includes horizontally symmetrical bumps protruding from the inside wall of the first frame.