The invention provides a get-off button with a protection function. The get-off button comprises a first side plate and a second side plate, wherein a first spring, a second spring and a third springare arranged between the first side plate and the second side plate; a pressure sensor is arranged between the first spring and the second side plate, a base of a rotary motor is fixedly connected onto the second side plate, an output shaft of the rotary motor is connected with one end of an expansion rod, the other end of the expansion rod is suspended, a first butt joint piece perpendicular to the expansion rod is arranged on the side surface of the other end, the expansion rod can expand towards the first side plate, a groove is formed in one side, facing the second side plate, of the firstside plate, a second butt joint plate perpendicular to the groove is arranged on the side wall of the groove, and a travel switch is arranged at the bottom of the groove; the second side plate is fixed on the inner side wall of a vertical handrail, a through hole is formed in the side opposite to the side, where the second side plate is fixed, of the vertical handrail, and the first side plate penetrates through the through hole to extend out of the vertical handrail. The service life of the get-off button can be prolonged.