Abstract: An integral brush is formed by performing steps of tufts arrangement, tufts insertion into mold, mold turning and closing, and injection molding, thereby forming no gaps between cleaning assembly and handle. The cleaning assembly includes at least one cleaning unit each having a plurality of tufts integrally formed with one of a plurality of bases in the handle. The tufts are spaced apart and an upper portion of each tuft is shaped to form an uneven tip. The brush can increase a contact area between the cleaning assembly and an object so as to effectively clean the object.