The normal standard value of lactate dehydrogenase is 104~245U/L. 320 U/L is mildly high, and the causes of the high value should be actively searched for, such as myocardial infarction, liver diseases, malignant tumors, acute leukemia, etc., all of which may lead to the elevation of lactate dehydrogenase value. 1. Myocardial infarction: it should be treated with anticoagulant drugs such as heparin, antiplatelet drugs such as aspirin, lipid regulating drugs such as atorvastatin, etc. Surgery should be carried out if necessary. 2. Liver disease: because hepatitis, cirrhosis, liver cancer and other diseases can cause lactate dehydrogenase elevation, patients need to do further relevant examinations to clarify the specific causes, and then targeted treatment. 3. Malignant tumors: mainly surgical treatment, some patients also need to receive chemotherapy, radiotherapy, targeted therapy, etc. after surgery. 4. Acute leukemia: mainly treated by chemotherapy. As there are many reasons for high lactate dehydrogenase, you should go to the hospital in time, and the doctor will do the relevant examination according to the medical history, in order to clarify the cause of the disease, and then systematic and standardized treatment.