Efficient dehumidification method for basement

The invention belongs to the technical field of ventilation and dehumidification, and particularly relates to a basement efficient dehumidification method which comprises a basement, a fire-fighting ventilation and smoke exhaust device and an air humidity monitor are arranged in the basement, and when it is monitored that the air humidity exceeds the standard, the underground ventilation and smoke exhaust device is started to conduct dehumidification operation, so that the basement air temperature and humidity are balanced with the outdoor air temperature and humidity; air circulation inside and outside the basement is achieved, and the problem of underground moisture is fundamentally solved; in general plum rain seasons, smoke exhaust and ventilation equipment is started in the non-rest time period for one week continuously, so that basement air circulates continuously, the indoor air temperature and humidity are kept balanced with the outdoor air temperature and humidity, and the good dehumidification effec