Precautions for subcutaneous insulin injection: i. First, determine whether the amount in the insulin refill is enough for the dose used for this injection. Second, determine whether it is the dosage form of insulin that you are injecting. Third, the choice of site, do not repeat the last site. Fourth, whether the injection of insulin has been prepared meals, and must remember to eat within 20 minutes must eat, and to eat the main food. Fifth, with 75% alcohol local skin disinfection, the needle must not be reused. Sixth, the use of insulin in the room temperature of 25 ℃ below the storage, avoid violent vibration and exposure to the sun, within four weeks effective. Seven, the new insulin must look at the shelf life. Insulin injection requires regular monitoring of blood glucose in order to adjust the dose of insulin at any time.