Ventilation structure of hospital sanitary passing area of infectious disease shelter

The utility model discloses a ventilation structure of a hospital sanitary passing area of an infectious disease shelter. The ventilation structure aims to solve the problem that airflow backflow is easily caused by the design of an existing fan and a ventilation short pipe. The ventilation structure comprises a first dressing room, a second dressing room and a buffer room which are sequentially distributed from a safe area to a polluted area, and is characterized in that an air supply outlet is formed in the top of the first dressing room; a first automatic exhaust valve is arranged on the partition wall of the first dressing room and the second dressing room and at the diagonal position of the air supply outlet; a second automatic exhaust valve is arranged on the partition wall between the second dressing room and the buffer room and at the diagonal position of the first automatic exhaust valve; and a third automatic exhaust valve is arranged on the wall of the polluted area of the buffer room and at the di