Helmet with inflatable lining

The helmet with the inflatable lining comprises a helmet body, the inflatable lining and a tying belt, the tying belt is arranged at the lower end of the inflatable lining and adheres to the inflatable lining, the inflatable lining is attached to the interior of the helmet body, the inflatable lining comprises an air bag, a deflation button and a simple inflation device, and the air bag is connected with the inflatable lining. The air bag, the deflation button and the simple inflation device are sequentially connected, the inflation lining and the tying belt are detachably connected with the helmet body, and the air bag protects the head after being inflated and is attached to the head top, the ears and the back side of the head for all-around protection. When a user wears the helmet, the inflatable lining can be deflated until the helmet can be worn by the user, and the inflatable lining can be adjusted to a proper size, so that the helmet can be matched with users with different head shapes, the head can be