The invention discloses a terminal box equipment based on a humiture sensor early warning technology. The terminal box equipment comprises at least three substation terminal boxes connected with a monitoring center by a WSN wireless network. Each of the substation terminal boxes comprises a cabinet body, and the inner wall of the corresponding cabinet body is provided with an inner temperature sensor, an inner humidity sensor, and a dehumidifier. The outer part of each of the cabinet bodies is also provided with an outer temperature sensor and an outer humidity sensor. The inner temperature sensor, the inner humidity sensor, the outer temperature sensor, the outer humidity sensor, the dehumidifier, and the heating wires of each of the cabinet bodies are electrically connected with a corresponding controller, which is also connected with a corresponding display lamp and a corresponding loudspeaker used for prompting occurrence of condensation. The inner wall of each of the cabinet bodies is provided with heat preservation cotton, and the heating wires are disposed between the corresponding heat preservation cotton and the inner wall of the corresponding cabinet body. The display lamps and the loudspeakers are used to acquire humiture signals inside and outside the cabinet bodies, and therefore the monitoring of the humiture is realized, and at the same time, the corresponding prompting is provided.