The invention discloses a cable clamp for a bunched cable. The cable clamp comprises an upper clamp plate and a lower clamp plate, wherein the bottom surface of the upper clamp plate is in contact with the top surface of the lower clamp plate; the upper clamp plate and the lower clamp plate are fixedly connected through a screw bolt; an upper bundling groove and an upper cable groove are formed in the bottom surface of the upper clamp plate; a lower bundling groove and a lower cable groove are formed in the top surface of the lower clamp plate; the circumference of the upper cable groove and the circumference of the lower cable groove are 1/3 of the circumference of a clamped conducting wire; each of the upper bundling groove and the lower bundling groove comprises a section of straight lien groove and circular arc grooves formed in 1/4 positions of the front end and the back end of the straight line groove; an insulation layer is arranged on the inner wall of each of the upper bundling groove and the lower bundling groove; the position of the upper bundling groove corresponds to the position of the lower bundling groove; and the position of the upper cable groove corresponds to the position of the lower cable groove. The cable clamp has the advantages that when the cable clamp for the bunched cable is used, the construction time is greatly shortened; the 22 minutes of a winding method is shortened to 10 minutes; the construction efficiency is greatly improved; the construction process stability is also ensured; and the sufficient reliability is ensured.