The invention discloses a cable connection positioning device, which is used for positioning a connection end of a cable for electrical connection with a connection seat (8) of power equipment. The cable connection positioning device comprises a base frame (9) and a positioning motor (7), wherein the positioning motor (7) is fixed in a lower base body (98) of the base frame; a screw rod (71) driven by the positioning motor (7) comprises a tail end for being rotationally fixed in an upper beam (93) of the base frame (9); and the screw rod (71) and a movable wedge block (72) are in screw-thread fit, so that the left side of the movable wedge block (72) and a guide rail groove (921) in a longitudinal bracket (92), arranged between the upper beam (93) and the lower base body (98), of the base frame (9) are in sliding fit, and a wedge surface on right side of the movable wedge block (72) is jointed with the wedge surface (63) on the left side of a clamping block (6).