The invention discloses a box type temperature and humidity control system. A temperature and humidity sensor, a temperature and humidity collecting circuit, a temperature and humidity transducing circuit, a temperature and humidity test and control device and a temperature and humidity remote control monitoring system are sequentially connected, the temperature and humidity collecting circuit is also connected with a temperature and humidity output circuit, an automatic controller and a manual controller are respectively connected with the temperature and humidity output circuit and are also connected with a temperature and humidity control system, an air exhaust regulating system and a dehumidification regulating system are respectively connected with the temperature and humidity control system, the electricity of the temperature and humidity collecting circuit, the air exhaust regulating system and the dehumidification regulating system is supplied by an alternating current power supply, and the electricity of the temperature and humidity control system is supplied by a direct current power supply. The box type temperature and humidity control system has the advantages that the manual operation and the automatic operation of the dehumidification and air exhaust operation of a switch cabinet can be realized, the automation level and the intelligentization level of the control system are improved, and the like.