Horizontal machining centers can generally only work normally in an environment below 30. Generally, the distribution box of the horizontal machining center is an exhaust fan and an air cooler to ensure that the electronic parts and machining work at a constant temperature. If the temperature and humidity are too high, the service life of each part of the control system will be reduced, resulting in an increase in unprovoked failures of horizontal machining centers. If the humidity increases, the dust on the integrated circuit board will increase, directly causing poor contact and short-circuit failure.