1. The key is to catch “early” to detect, diagnose and treat the symptoms and signs of spread and metastasis at an early stage. Once cancer is diagnosed, the best decision for patients and their families is to go to oncology specialists and take the treatment plans of oncologists. 3. Regular follow-up examinations to prevent recurrence The law of cancer development shows that its recurrence often occurs within 5 years after treatment, especially within 2-3 years, and a few of them can also occur after 5 years. Therefore, regular follow-up examinations are lifelong. 4.Avoid local stimulation to cause cancer spread and metastasis For the lumps that may be tumors, especially after it is clear that their pathological nature is malignant, try not to touch, squeeze, apply heat and physiotherapy to avoid promoting cancer cells to shed and induce or accelerate the spread and metastasis. 5.Increase the immunity of the body Strengthen nutrition, keep the mood relaxed, exercise properly, and use medical means to promote the enhancement of immune function to resist and reject the occurrence and development of tumor.