Drainage device of temperature and humidity adjusting box

The utility model discloses a temperature and humidity adjusting box drainage device which comprises a drainage opening, the drainage opening is formed in one end of a temperature and humidity adjusting box, one end of the drainage opening is connected with a drainage pipe, one end of the drainage pipe is provided with a filter screen through an installation mechanism, and a circulation plate is arranged at the connection position of the drainage pipe. According to the drainage device of the temperature and humidity adjusting box, the connecting rod connected with one end of the filter screen and the fixing block are inserted into the grooves formed in the surface of the drainage pipe, then the filter screen is rotated, the clamping block connected with one end of the fixing block can be rotated into the clamping groove formed in the surface of the groove, and the clamping groove and the clamping block are matched for use; the drainage pipe and the filter screen can be installed, liquid generated in the tempe