The invention provides a damp-repelling and heat-dissipating
computer case, which comprises a case body, a case door, a viewable window, a dehumidifying fan, a refrigerating fan, a frequency converter, a sealing edge, self-locking casters, a circulating pipeline, a connecting piece, circulating air nozzles, a splitter top plate, a splitter bottom plate, a temperature and
humidity detector, a hinged shaft, a hand wheel, a data processor, an electric mounting plate, a component, an air vent and a protective net. The upper part of the inner cavity of the case body is fixedly provided with the splitter top plate; the lower part of the inner cavity of the case body is fixedly provided with the splitter bottom plate; the circulating air nozzles are arranged at the top of the inner cavity of thecase body and at the bottom of the inner cavity of the case body, and the circulating air
nozzle located at the top of the inner cavity of the case body and the circulating air
nozzle located at the bottom of the inner cavity of the case body communicate with each other through the circulating pipeline, and the dehumidifying fan and the refrigerating fan are respectively installed on the circulating pipeline. The case can form a flowing
airflow in the inner cavity of the case body, and has good effect of dispelling damp and lowering temperature. The air pressure in the case can be balanced bysetting the air vent, and the flying insects can be prevented from entering the case through the air vent through the setting of the protective net.