Dehumidification method and system and equipment to be dehumidified

The invention discloses a dehumidification method and system and to-be-dehumidified equipment, and relates to the field of dehumidification control, for the to-be-dehumidified equipment, the air dew point temperature of the internal environment can be determined based on the first temperature and the relative humidity of the internal environment of the to-be-dehumidified equipment; whether the difference value between the second temperature of the inner wall and the air dew-point temperature is larger than 0 and not larger than a preset minimum heating threshold value or not is judged, if yes, it is indicated that the current temperature is close to the air dew-point temperature and dew formation is about to occur, then intervention is introduced before dew formation, namely, a heating module arranged on the inner wall in advance is controlled to emit heat so as to heat the plate forming the inner wall, and the plate forming the inner wall is heated; as the temperature of the inner wall rises, the formation c