The invention discloses a physiotherapy waist protector. A technical scheme of that medical device comprise a connecting belt, a first waistband, a second waistband, a small back plate, a large back plate, a first waistband and a second waistband on both sides of the connected belt, the front side of the connecting belt is closely adhered to the back side of the small back plate, the front side ofthe small back plate is closely adhered to the back side of the large back plate, and the large back plate is directly in front of the connecting belt. The physiotherapy waist protection adopts the waist protection, the ice pad and the magnetic therapy sticking in one body, effectively nursing the waist of the user, at the same time, the magnetic therapy is carried out on the user, thereby activating the energy of the human body cells and promoting the blood circulation of the human body; The invention adopts a fixing ring, a pulling ring and a tie strap to effectively adjust the curvature ofthe connecting strap, so that the waist protector is close to the body direction, the stability of the waist protector is ensured, and the waist protector is adapted to be used by users with different waist circumference; The invention adopts the combination of the waist line sensing device and the waist bending early-warning device, and effectively achieves the early-warning function for the user.