According to the common early manifestations of common tumors, our country has proposed 10 early signs of malignant tumors: 1. palpable or non-dissipating lumps in breast, skin, tongue or other parts of body; the most basic feature of tumors is lumps, and lumps appearing in various parts of body must be highly alert. 2.Obvious changes of warts (superfluous tumors) or moles; such as deepening of color, rapid increase in size, itching, hair loss, oozing, ulceration, bleeding, etc., are often manifestations of malignant skin tumors such as malignant melanoma and basal cell carcinoma of the skin. 3.Persistent dyspepsia; if dyspepsia persists for a long time and the effect of active medical treatment is not good, the possibility of gastric cancer should be highly alerted. 4.Choking sensation when swallowing food, pain, post-sternal stuffiness and discomfort, foreign body sensation in the esophagus or progressive dysphagia; typical early manifestations of esophageal cancer. 5.Tinnitus, hearing loss, nasal congestion, epistaxis, blood in nasopharyngeal secretions from aspiration and coughing, lumps in front of head and neck; early manifestation of malignant tumor in head and neck such as nasopharyngeal cancer. 6.Unusual heavy bleeding during menstruation, irregular vaginal bleeding outside menstruation or after menopause, contact bleeding; often early manifestation of gynecological tumors such as cervical cancer. 7.Persistent hoarseness, dry cough, blood in sputum; one of the early manifestations of lung cancer. 8.Unexplained blood and mucus in stool or alternating diarrhea and constipation, unexplained hematuria; abnormal stool is a common manifestation of intestinal tumors such as colorectal cancer, and hematuria is a common manifestation of malignant tumors of urinary tract. 9.Wounds and ulcers that do not heal for a long time; it is necessary to be alert and find out the cause in time. 10.Unexplained prolonged weight loss or fever; the growth of malignant tumor needs to consume a lot of nutrition by the body itself, which causes weight loss. At the same time, cancerous substances secreted by cancer cells often lead to fever in human body. Unexplained prolonged weight loss and fever are often signs of malignant tumor. If malignant tumor is present, early detection and early diagnosis should be made in order to gain valuable time for treatment.