Electrical terminal box dehumidifying device

The utility model provides an electrical terminal box dehumidifying device, and relates to the technical field of electrical equipment. According to the utility model, the heat preservation sealing disc, the drying assembly and the control device are matched; when the electrical terminal box is used, the flange cover of the electrical terminal box is dismounted; a heat preservation sealing disc isused for replacing a flange cover to be installed at a terminal box opening. Then, the air inlet pipe is communicated with an exhaust hole in the heat preservation sealing disc; the air outlet pipe is communicated with an air inlet hole in the heat preservation sealing disc; the electric heating wire, the circulating fan and the condenser cooperate with one another; the air in the electrical terminal box is pumped out to be heated and circularly fed into the electrical terminal box, components in the terminal box are dried, and meanwhile, moisture in the terminal box is condensed and discharged on the condenser, so t