The pharmacokinetic characteristics (including the onset of action and the duration of maintenance of action) of insulin of different sizes are different. Therefore, insulin must be injected regularly and quantitatively as required, otherwise it may cause continued fluctuation or increase of blood sugar. However, due to various reasons, the phenomenon of “forgetting to take insulin” happens in diabetic patients from time to time, for type 2 diabetic patients whose blood sugar is not very high, the problem is not too big, and they can take acarbose or Novocain immediately after meals; but for type 1 diabetes, gestational diabetes, type 2 diabetes with poor pancreatic function resulting in drug failure and For type 1 diabetes, gestational diabetes, type 2 diabetes with poor islet function and drug failure, and some secondary diabetes patients need to take active remedial measures, and only insulin can be chosen, otherwise serious consequences may occur. If the insulin used is ultra-short-acting insulin (such as Novalax) or short-acting insulin (such as Novalax R) and forgotten before meal, it can be injected immediately after meal, which has little effect on the efficacy. For patients who inject premixed insulin (such as Novolin 30R) or premixed insulin analogs (such as Novolac 30) before breakfast and dinner, if you forget to take insulin before breakfast, you can make up for it immediately after meal, during which you should pay attention to monitor blood sugar and add meals in between if necessary; if you remember that it is almost noon, you should check blood sugar before lunch, and when it is more than 10mmol/L, you can temporarily inject once before lunch. Short-acting (or ultra-short-acting) insulin, the dose can be increased or decreased appropriately on the basis of the regular dose before breakfast, and the two premixed insulins in the morning and evening must not be combined into one injection before dinner. If the patient uses long-acting insulin once a day and misses one injection, he can make up for it as soon as possible. If the next injection is given at the original time, he should pay attention to the hypoglycemic reaction because the interval between two injections is likely to be less than 24 hours, or he can change the injection time to make up for it (such as making up for insulin at 8:00 a.m. and injecting insulin at 8:00 a.m. in the future). Timely and regular medication is the basic requirement for smooth blood sugar control. As a patient, you should try to minimize or avoid the situation of missing the glucose-lowering medication or forgetting to take insulin. Once these situations do occur, it is important to take the correct remedial measures in order to minimize the resulting harm.