Can cancer be cured? The answer should be yes. Generally speaking, with reasonable treatment, about one-third of tumor patients can be cured, one-third can prolong their lives, and one-third can relieve their symptoms and reduce their pain. In fact, under the current treatment conditions, if the existing technical means can be reasonably applied and individualized treatment can be achieved, 50% of tumor patients should be able to be cured. Specifically, the 5-year survival rate of early-stage esophageal cancer, stomach cancer, colorectal cancer, breast cancer and cervical cancer can reach more than 85% (5-year survival rate refers to the percentage of patients who are still alive after 5 years), and most of them may not recur in the future, so we also call it 5-year cure rate. Some tumors, even at advanced stages, can be cured with chemotherapy and bioimmunotherapy. For example, the cure rate of Hodgkin’s lymphoma is more than 80% with chemotherapy, and the cure rate of non-Hodgkin’s lymphoma is more than 50-60% with chemotherapy; about 30% of patients with acute myeloid leukemia can be cured after chemotherapy, among which acute granulocytic leukemia type M3 can be cured with arsenious acid alone, or may be cured with retinoic acid alone without chemotherapy; the cure rate of testicular spermatocytoma stage I is nearly 100% with chemotherapy. The cure rate for malignant staphyloma and choriocarcinoma is more than 85-90%; the cure rate for pediatric neuroblastoma, Ewing’s tumor, and nephroblastoma is 30-50% through chemotherapy; even for small cell lung cancer, which is extremely malignant, the survival rate is more than 35% at 3 years and more than 5% at 5 years after chemotherapy. It is not uncommon for people to survive for more than 20 years after remission. For non-small cell lung cancer, patients with advanced stage chemotherapy alone are often still alive after more than 10 years; even if they lose the possibility of chemotherapy, oral targeted drug therapy, the tumor is now completely receding, and those who survive for 5, 6, 7, 13 years and continue to survive are also common. Some tumors can be cured by radiotherapy. For example, most of early Hodgkin’s lymphoma (stage I and II) and non-Hodgkin’s lymphoma (stage I and II) can be cured by radiotherapy alone; the 5-year survival rate of nasopharyngeal cancer is more than 30% after radiotherapy; the 5-year survival rate of esophageal cancer is more than 10% after radiotherapy; the 5-year survival rate of early cervical cancer is more than 90% after radiotherapy, and even at stage III, some patients can still be cured; some intermediate and even some early stage tumors require chemotherapy, radiotherapy, and radiotherapy. Some mid-stage and even some early-stage tumors require a combination of chemotherapy, radiotherapy, and surgery to achieve a cure, such as mid-stage lung cancer, stomach cancer, intestinal cancer, esophageal cancer, liver cancer, breast cancer, ovarian cancer, lymphoma, nasopharyngeal cancer, kidney cancer, nephroblastoma, testicular tumor, neuroblastoma, pancreatic cancer, etc. Sadly, the majority of patients are already in advanced stages when they are diagnosed, and most advanced tumors are currently incurable. Therefore, it is necessary to raise the awareness of cancer prevention and treatment for all people through propaganda, so as to achieve early diagnosis and early treatment; it is better to have an annual health check-up, so as to achieve the three early preventions (early detection, early diagnosis and early treatment), which is the only way we can significantly increase the cure rate of tumors.