Operating gown with size convenient to adjust

The operating gown comprises an operating gown body, the back of the operating gown body is of an opening structure, back fixing tying ropes which are symmetrically arranged are connected to the two sides of the opening in the back of the operating gown body, a collar is arranged on the operating gown body, shoulders are arranged on the two sides of the collar, and the operating gown body is connected with the operating gown body. Fixing buttons are symmetrically connected to the shoulders, sleeves are connected to the two sides of the shoulders respectively, cuff elastic bands are embedded in the ports of the sleeves, first adjusting buttons and second adjusting buttons are symmetrically arranged on the two sides of the upper ends of the sleeves, sleeve adjusting sections are arranged on the sleeves, elastic ropes are evenly connected to the interiors of the sleeve adjusting sections, and the elastic ropes are connected to the upper ends of the first adjusting buttons and the second adjusting buttons. A wais