Conservative treatment of lymphoma generally refers to non-surgical treatments such as radiotherapy, chemotherapy, etc., which need to be adopted reasonably according to the patient’s condition. Lymphoma is a malignant tumor originated from lymphohematopoietic system, which is classified into two categories according to tumor cells: non-Hodgkin’s lymphoma and Hodgkin’s lymphoma. Hodgkin’s lymphoma is mainly treated with a combination of chemotherapy and radiotherapy. Non-Hodgkin’s lymphoma, on the other hand, requires a choice of treatment based on the specific pathologic type, clinical stage, and other factors. For patients with inert lymphoma, close observation is usually sufficient for those with no indication for treatment. Those who need treatment may use chemotherapy, immunotherapy, radiotherapy, etc. as appropriate. Aggressive lymphoma and highly aggressive lymphoma progress faster and can be treated with chemotherapy, immunotherapy, radiotherapy and hematopoietic stem cell transplantation. It is suggested that lymphoma patients should choose to carry out standardized treatment according to their own conditions under the guidance of doctors.