Back in 2006, the World Health Organization announced that cancer (malignant tumor), which was once a “terminal disease”, was renamed as a chronic disease. The so-called chronic diseases are diseases with slow pathological changes, long disease duration and incurable in the short term or for life. Many people may still remember that decades ago hypertensive encephalopathy and diabetic hyperosmolar coma could take life quickly, and the situation at that time was the same as people’s fear of tumor now. Many hypertensive and diabetic patients have survived for a long time. I believe that one day people will realize that tumor is not a hideous demon. I have many cases here to share with you. Case 1: A middle-aged female, a teacher, was found to have an occupying lung lesion in her physical examination ten years ago. After surgery, she had many recurrences, and after chemotherapy and radiotherapy, she had another recurrence at the end of 2007. Case 2: An elderly female, 76 years old, with lung adenocarcinoma and bone metastasis, did not undergo chemotherapy due to her age, and started to take ERSA tablets and anti-bone metastasis treatment in March 2006. Case 3: An elderly male, 70 years old, was diagnosed as pancreatic cancer with multiple metastases in the liver 3 years and 6 months ago due to difficulty in eating, and all the lesions disappeared completely after giving chemotherapy. Tumor is not an alien, but a result of transformation of normal cells after long-term stimulation by various factors, and the reason why human beings get tumor is the result of serious disorder of human internal environment. Therefore, the treatment of tumor should restore the stability of internal environment and achieve a balanced and harmonious state, not only to destroy all tumor cells is considered a victory. The treatment of tumor is not only drug treatment, because of the lack of knowledge about tumor and prevention, many families and patients have psychological misunderstanding, we must increase the publicity of this knowledge, so that people can come out from the misunderstanding as soon as possible, and only then the treatment of tumor will see the light.