Insulin four injections a day at night can not not play, need to use insulin patients should follow the doctor’s instructions on time and in accordance with the amount of injection of drugs. Insulin is a protein hormone, can play a role in regulating glucose metabolism, control the effect of glucose balance, commonly used in the treatment of diabetes and hyperglycemia patients, the body’s blood glucose value can be controlled in the normal range, in the time of insulin injections, the need for regular and quantitative injections under the guidance of the doctor. In general, four injections a day can control the blood sugar in the body within the normal range. If one injection at night is not given, it may cause the insulin injected in the body not to be maintained for a fixed period of time, and may cause the blood sugar value in the body to increase again. Especially with the long hours at night, the discomfort of elevated blood sugar cannot be detected and can increase the chances of complications. When injecting insulin, be sure to follow your doctor’s instructions and take regular injections to avoid another rise in blood sugar. When discomfort occurs, seek medical attention promptly.