The most common reasons for hypoglycemia in diabetes are as follows: 1. Many patients are diagnosed with diabetes because they go to the hospital after having hypoglycemia and are diagnosed with diabetes, because there is a delay in pancreatic secretion, so it is easy to have hypoglycemia before the next meal. 2. Hypoglycemia occurs due to taking medication during glucose-lowering treatment, the time of taking medication, the amount of medication and the type of medication taken all have an impact on hypoglycemia. 3. Excessive exercise leads to Hypoglycemia, many patients will exercise more after 1-2 hours of eating, easy to easily cause insulin sensitivity increase and lead to lower blood sugar.