This product is designed based on the storage of drugs carried by patients with chronic diseases. The main users consider diabetic patients, which is convenient for patients to carry insulin and syringes when they go out. Using semiconductor refrigeration technology, cold and heat dual control, according to the drug storage conditions set, the operation of the internal up to 2 ℃-8 ℃, to provide a constant temperature control storage space, to maximize the effectiveness of the drug. Hope to help more people live a better life through design.