The invention provides a drawer type power distribution switch cabinet wireless temperature and humidity monitoring system which is characterized by comprising an operator side and a production plant side. The operator side is provided with a server which is connected with PCs. The server is provided with a server wireless communication module. The production plant side is provided with a temperature sensor, a humidity sensor and a temperature and humidity control device. The temperature sensor, the humidity sensor and the temperature and humidity control device are connected with a wireless communication module. With application of the technical scheme, network working can be automatically added so that labor and time required for network maintenance can be reduced to the greatest extent by high intellectualization; besides, the network node is low in price so that the maintenance cost of a wireless sensor network is enabled to be extremely low.