Highly-efficient dehumidification power distribution box

Provided is a highly-efficient dehumidification power distribution box. The power distribution box comprises a main box body, a refrigeration device arranging bin and a water collecting device arranging bin. A refrigeration device is installed in the refrigeration device arranging bin. A heater is installed in the main box body. An air blower is installed on the heater. An air discharging opening of the air blower is connected with an air charging opening of a condensation pipe. A water outlet of the condensation pipe is connected with one end of the refrigeration device via a pipeline. A water inlet of the condensation pipe is connected with the other end of the refrigeration device via a pipeline. A water collecting device is arranged in the water collecting device arranging bin. A temperature sensor, an air blower controller, a main controller, a heater controller and a refrigeration controller are installed in the main box body. By installing the air blower, the condensation pipe and the water collecting pipe, damp air in the main box body is condensed into liquid which will be discharged, so use safety of a switch is ensured, potential safety hazards are eliminated and service lifetime of the product is extended.