The invention discloses an intelligent monitoring device of a distribution box. The distribution box comprises a box body configured with a box door at least, electrical equipment is installed in the box body, a proximity switch is installed on the opening and closing position of the box door, the proximity switch is connected by conducting wires and arranged on a control main engine in the box body, the control main engine is configured with a GPRS message sending module at least, and the GPRS message sending module is configured with one or more mobile terminals capable of receiving messages; a ventilation fan connected with the control main engine is installed in the box body, a temperature and humidity sensor is installed in the box body, the temperature and humidity sensor is connected with the main engine, and the ventilation fan is controlled by a temperature and humidity control valve value set by the control main engine to work and ventilate; the intelligent monitoring device of a distribution box has the advantages that the structure is simple, the use and installation are convenient, the number of the safety accident occurrences of the distribution box is reduced, the service life of the electrical equipment is prolonged, and the normal operation of an electrical circuit is guaranteed.