If the insulin is not unpacked, it should be stored in 2-8℃ environment, try to put it in the fresh layer of the refrigerator, you can put it in the middle of the fresh layer, try not to stick it on the inner wall of the refrigerator, because sometimes the temperature of the inner wall will be low, once the insulin freezes and freezes, it will be ineffective, and have no glucose-lowering effect. If the insulin has been unpacked it no longer needs to be stored strictly in a 2-8℃ environment, it can be stored at room temperature away from light, avoiding direct sunlight and high temperature. However, once unpacked, insulin can be used for a timeframe of only 1 month. If unopened, its shelf life can be judged according to the production date and shelf life on the box.