Anti-falling heating jacket

The utility model relates to the technical field of heating jackets, and discloses an anti-falling heating jacket which is characterized in that the outer side of a heating jacket body is connected with a magic tape rough surface through connecting cloth, the outer side of the heating jacket body is provided with a magic tape hook surface, one end of the outer side of the heating jacket body is provided with a power line, and the two ends of the heating jacket body are respectively provided with a tightening assembly; by pressing a knob downwards, a tightening column is pushed to move downwards, so that an inner groove of the tightening column is separated from the outer side of a tooth, at the moment, the knob can be rotated clockwise, a connecting rope is driven by the knob to tighten, and after tightening is completed, the knob is pulled upwards, so that the tightening column moves upwards; meanwhile, the grooves in the inner sides of the tightening columns are clamped to the outer sides of the teeth, and