The paper aims to lack of Susceptible to damp, easy to mold, easy to breed bacterial phenomenon, environmental automatic adjustment, information management and dress collocation functions of traditional wardrobes, and adhering to the concept of intelligence, convenience and low carbon emission, the "smart wardrobe" system was designed; Complete automatic temperature and humidity control, clothing index reminder and MQTT data transmission and other features of the design, and the "one-stop" smart wardrobe environment monitoring was realized by using the IoT technology. Temperature and humidity fuzzy PID control algorithm, clothing index evaluation function and others were used for optimization of system software, and the overall design of the system is simple; The test results show that the system can realize automatic control of hardware and software, A clothing information management system was established, and the system provides meteorological information, personal preferences, broadcasts daily clothing index, and makes clothing recommendation for a business destination; in addition, the system realized MQTT mode data transmission, and mobile terminal remote monitoring. the whole process is unsupervised by man, and it is automatically adjusted. The function of a wardrobe is changed to the adviser and housekeeper for going out.