The invention relates to a substation indoor environment intelligent control device which is characterized in that an indoor unit, an outdoor unit and a sensor set are included. The indoor unit comprises a box, an air inlet is formed in the upper portion of the box, an air outlet is formed in the lower portion of the box, the inside of the box is sequentially provided with an evaporator, a water collecting plate, a fan and a silencing pipeline from top to bottom, the evaporator corresponds to the air inlet in position, the water collecting plate is located under the evaporator, the upper end of the silencing pipeline is connected with the fan in a sealed mode, the lower end of the silencing pipeline is connected with the air outlet in a sealed mode, a controller is disposed in the box, a compressor is arranged in the outdoor unit, the sensor set comprises an outdoor temperature and humidity sensor and an indoor temperature and humidity sensor, and the evaporator, the fan, the compressor, the outdoor temperature and humidity sensor and the indoor temperature and humidity sensor are electrically connected with the controller. Environment control is performed on indoor space in a substation by means of the intelligent control device, potential safety hazards do not exist, energy can be saved, meanwhile, air outflow amount and air speed are easy to control, and eddies and turbulent flow can not be generated.