The preservation of insulin requires high ambient temperature, insulin in use in summer can be placed directly in a cool environment not exceeding 30 ℃ room temperature for 4~6 weeks, the placement process should pay attention to prevent exposure to the sun, while not placed in places that are prone to heat production such as the kitchen and other locations, so as not to reduce the activity of insulin at a temperature too high. For unopened insulin should generally be placed in the refrigerator at 2 ℃ ~ 8 ℃, be careful not to place in the freezer or close to the refrigerator cooling device. Insulin needs to be stored at a suitable temperature, neither too high nor too low, and at the same time, it should be protected from light and used within the expiration date. It is recommended that patients who need to use insulin should go to regular hospitals for consultation, and store and use it correctly under the guidance of doctors, so as not to lead to adverse consequences.