Hypoglycemia in diabetic patients may be caused by improper medication, improper diet and excessive exercise. 1. Improper medication: usually diabetic patients need to strictly follow the doctor’s instructions to take hypoglycemic drugs, if the patient overdose of hypoglycemic drugs or take hypoglycemic drugs in an inappropriate way, then hypoglycemia may occur. 2. Improper diet: usually diabetic patients need to actively regulate their diet, choose high dietary fiber, low salt, low sugar, low fat diet to ensure balanced nutritional intake. If patients have poor dietary habits, often do not eat on time or eat less, it may induce hypoglycemia. 3. Excessive exercise: during the treatment period, diabetic patients can properly carry out physical exercise, which is conducive to blood glucose control, but patients with excessive exercise may induce hypoglycemia. It is recommended that diabetic patients strictly follow the doctor’s instructions for systematic treatment, if the phenomenon of hypoglycemia, but also need to actively cooperate with the doctor to take reasonable measures.