Glycine insulin is a protein that is easily denatured and inactivated at high temperatures, resulting in failure. Unopened insulin needs to be kept refrigerated. Unopened insulin needs to be kept in a cool place or refrigerated. The most important thing about preserving Glycine Insulin is that the storage temperature must be suitable. 1. Unopened Glycine Insulin: It is recommended to store it in the refrigerator at 2 to 8°C. Be sure not to freeze it, otherwise it will affect the efficacy of insulin. Remove it from the refrigerator 2 hours before use. 2. Glycine insulin that has been opened: (1) It can be kept in the refrigerator at 2～8℃, and cannot be put into the refrigerator freezer, freezing will lead to the denaturation of insulin and affect its effect. (2) If the room temperature is around 20℃, it can be stored in a cool place at room temperature. (3) It cannot be repeatedly alternated between hot and cold environments, otherwise it will affect the action of insulin. (4) It cannot be exposed to sunlight. (5) For patients who need to travel, it is recommended to put it in insulin-specific box and carry it with ice packs during long-distance travel to avoid high temperature, sunlight, and violent vibration, which will affect the effect of medicine. In conclusion, Glycine insulin must be stored with attention to the storage temperature, gently shaken before use, and strict aseptic operation procedures should be followed to prevent drug contamination.