Cold storages are used to store various perishable goods, and the stability of temperature and humidity is crucial. The temperature and humidity field inspection instrument can comprehensively monitor the temperature and humidity field in the cold storage. In the cold storage, different goods have different suitable storage temperature and humidity requirements. The inspection instrument collects data through probes distributed in various areas to ensure that the temperature and humidity of the entire cold storage space meet the goods storage standards. Once there are abnormal fluctuations in temperature and humidity, it can quickly feedback to the management personnel, and take measures such as repairing refrigeration equipment to prevent the goods from deteriorating and being damaged and reduce economic losses.