Most of the malignant tumors may show suspicious signs at the early stage, which can be summarized as the following ten warning signs in our specific situation: 1. A palpable, non-fading and gradually growing lump is found on the skin, breast, tongue or any part of the body. 2, warts or moles have changed significantly. 3. Persistent indigestion. 4. Discomfort in swallowing, abnormal sensation, slight pain or choking in the esophagus behind the sternum. 5. Tinnitus, hearing loss, nasal congestion, nosebleeds, sometimes dizziness, headache. 6. Vaginal bleeding outside the menstrual period or after menopause. 7. Persistent dry cough, blood in the sputum and hoarseness. 8. Change in bowel and urine habits. 9. Wounds or ulcers that do not heal for a long time. 10. Unexplained weight loss. Patients who have the above symptoms should go to the regular hospital for professional consultation as soon as possible. Patients who are inconvenienced by medical treatment or want to come to Beijing for consultation can communicate with me by telephone.