Tumor is usually asymptomatic in the early stage, while in the middle and late stage, local manifestations such as lump, pain, bleeding, metastasis and systemic symptoms such as emaciation and fatigue may appear. 1. Lump: If the tumor is located on the body surface or superficial, lump is the main characteristic manifestation, but the lump located in the viscera or deep is not easy to be touched. Generally, benign tumor grows slowly, while malignant tumor grows faster. 2. Pain: the growth of mass or infection will stimulate and compress the peripheral nerves, which may cause local stabbing pain, throbbing pain, hidden pain and radiating pain, which are mostly obvious at night. 3. Bleeding: commonly, there are upper gastrointestinal tract tumors with vomiting blood and black stool; lower gastrointestinal tract with bloody stool or mucous blood stool; cervical cancer can have bloody leukorrhea or vaginal bleeding, and so on. 4. Metastatic symptoms: for example, bone metastasis may cause pain and hard nodule, pathological fracture; liver cancer, stomach cancer may cause ascites, etc. 5. Systemic symptoms: generally benign tumors do not have systemic symptoms, while malignant tumors often have systemic symptoms such as anemia, emaciation and fatigue. Malignant tumors often have systemic symptoms such as anemia, emaciation, fatigue, etc. Tumors may also have symptoms such as burning sensation after eating or progressive dysphagia, painless hematuria, etc. It is recommended to go to the hospital for consultation in time when abnormal symptoms appear, so as to facilitate early discovery, diagnosis and treatment, and to improve the cure rate.