In order to realize the function of accurate measurement, multipoint collection and wireless transmission on various environmental monitoring factors in the workshop, a workshop environment monitoring system is proposed based on the technology of internet of things. A number of wireless monitoring nodes are set up in each workshop to collect a variety of environmental information, then transmit the data to the server by wireless network, which provides a theoretical basis for managers and staff to master the environmental situation in the workshop and take timely prevention and disposal. The test results demonstrate that the system has good reliability, high monitoring precision and can realize centralized visual monitoring of environmental conditions within a certain range. Therefore, it has high practical value.