Many experiments in the laboratory have strict requirements for environmental temperature and humidity. The temperature and humidity field inspection instrument can accurately measure the temperature and humidity in different experimental areas in the laboratory. For example, in chemical experiments, the reaction rate of some reagents is affected by temperature and humidity; in biological experiments, the culture of microorganisms also requires suitable temperature and humidity conditions. The inspection instrument can ensure the stability of the experimental environment, provide accurate temperature and humidity data references for scientific researchers, guarantee the accuracy and repeatability of experimental results, and promote the smooth progress of scientific research.