Common features of tumor metastasis include the appearance of new lumps, local pain, tumor compression, and decreased physical fitness, etc. 1. Appearance of new lumps: new lumps can be touched after the metastatic tumor grows bigger or the lymph nodes are enlarged due to lymph node metastasis. Usually the mass is hard and not easy to push. 2. Local pain: Tumor metastasis will cause severe local pain if it invades and grows into neighboring tissues. For example, pleural metastasis will cause chest pain, brain metastasis will cause headache, bone metastasis will cause bone pain. 3. Tumor compression: the metastatic tumor will compress the neighboring tissues after its volume increases. If the metastatic tumor compresses the central or nervous system, it will cause aphasia, blindness, hemiplegia and other symptoms. If the metastatic tumor compresses large blood vessels, it will cause tissue edema or ischemia. 4. Decrease in physical quality: metastasis of tumor, in essence, the increase in the number of cancer cells will aggravate the consumption of nutrients in the body, causing emaciation, fatigue and decrease in immunity, which will further lead to malignant disease or even multi-organ failure. If there is any symptom of physical discomfort, one should go to the hospital in time and consult the physician for guidance.