If malignant tumors can be treated in time at the early stage of development, they can achieve good treatment effect or even cure. However, when many tumor patients visit hospitals, they are found to be in advanced stage and miss the best treatment time. Therefore, early detection, early diagnosis and early treatment are crucial for tumor patients. Malignant tumors often have some symptoms in early stage, and these symptoms are early alarm signals issued by tumors to patients. When these symptoms appear, one should be alert to the possibility of tumor and go to hospital for examination in time. The early alarm signals of malignant tumor are summarized as the following 10: 1. A lump appears in any part of the body and increases progressively. 2.Choking sensation when swallowing food, pain, stuffy discomfort behind the sternum or foreign body feeling in the chest. 3.Persistent indigestion, upper abdominal fullness and discomfort or loss of appetite. 4.Persistent dry cough, sputum with blood, hoarse voice or nasal congestion, nosebleeds and sometimes headache. 5.Unusual heavy bleeding during menstruation, irregular vaginal bleeding outside menstruation or after menopause, contact bleeding. 6.Unexplained blood and mucus in the stool, or alternating diarrhea and constipation, unexplained hematuria. 7.Non-traumatic ulcers or ulcers on scars occurring on any part of the body that do not heal for a long time. 8.Obvious changes in warts or moles, such as darkening of color, rapid increase in size, itching, hair loss, oozing, ulceration, bleeding, etc. 9.Unexplained fever, jaundice, anemia or weight loss. 10.Unexplained lactation, bloody discharge from nipples or erosion.