Some patients suffering from systemic diseases should not have their teeth extracted, such as heart disease, hypertension, diabetes, hepatitis, kidney disease, etc., as follows. 1. Heart disease: patients with recent myocardial infarction or recent angina pectoris, as well as patients with cardiac function grade Ⅲ ~ Ⅳ or symptoms such as sedentary respiration and jugular vein varicose, etc., should not be extracted. 2. Hypertension: If the blood pressure is higher than 180/100mmHg, it is not suitable for tooth extraction, and those whose heart disease is accompanied by high blood pressure should control the high blood pressure first before tooth extraction. 3. Diabetes: patients with uncontrolled and severe diabetes should not have their teeth extracted. 4. Hepatitis: tooth extraction is not recommended during acute hepatitis. 5. Kidney disease: patients with various types of acute kidney disease should not have their teeth extracted. There are other systemic diseases that may affect the performance of tooth extraction, it is recommended to go to the hospital to receive regular treatment.