First of all, the drugs are prepared in advance, diabetic patients must be prepared with sufficient drugs, insulin, needles, sterile swabs and alcohol before travel, if the drugs are not prepared adequately, once the drugs are stopped during the journey is likely to lead to an increase in blood sugar and cause acute complications of diabetes. For patients who inject premixed insulin, such as Novolin 30R or premixed insulin analogues such as NovoRel 30, before breakfast, if you forget to take insulin before breakfast, you can make up for it immediately after the meal, pay attention to monitoring blood sugar during the period, and add meals in between if necessary; if it is almost noon when you want to get up, you should check your blood sugar before lunch, and when it exceeds 10mmol/L, you can temporarily inject a short-acting (or ultra-short-acting) insulin before lunch. (or ultra-short-acting) insulin, the dose can be appropriately increased or decreased on the basis of the regular dose before breakfast, and the two premixed insulins in the morning and evening should 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 without paying too much attention to the time. 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, and he can also change the injection time to adjust the injection time to make up for it, such as making up insulin at 8:00 am and injecting insulin at 8:00 am in the future. Timely and regular medication is the basic requirement for smooth blood sugar control. As a patient, it is important 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. During the trip, it is also necessary to pay attention to bring appropriate candy, or chocolate, in case of emergency when low blood sugar occurs.