The invention provides an adjusting method for a brake switch, and the method comprises steps of: pressing a boot (2) onto a reel (D) to release a brake; fastening a controller switch adjustment bolt (5g), which performs motion adjustment of a controller switch, the controller switch is in a contact with an impactor (3) via a coil housing (4), and performs switch of attraction and release of the brake (5) through close and disconnection of the switch; loosening the adjustment bolt (5g) to a motion point of disconnection of the switch (5); loosening the adjustment bolt (5g) to make the switch (5) further move to a specified position from the position of the motion point of disconnection of the switch (5); and under the condition of normal motion, inputting a gasket (X) between an armature (1) and a coil housing (4).