Lymphoma originates from lymph nodes and lymphoid tissues, and its occurrence is mostly related to the malignancy of certain immune cells produced by the proliferation and differentiation of lymphocytes in the process of immune response, and is a malignant tumor of the immune system. The main clinical manifestations are lymph node enlargement and pressure symptoms, invasion of tissues and organs causing symptoms of various systems. According to histopathology, they are divided into two categories: Hodgkin’s lymphoma (HL) and non-Hodgkin’s lymphoma (NHL). There is no name for lymphoma in Chinese medicine, but it is mostly classified as “malignant nucleus” according to its clinical manifestations. Etiology and pathogenesis: The pathogenesis of this disease is closely related to “phlegm”, as the saying goes, “No phlegm makes nucleus”. There are two causes of phlegm: one is cold and damp condensation into phlegm, and the other is fire and heat decoction of fluids into phlegm. The cold nature condenses and attracts, and the wet can become phlegm over time. The evil of wind and cold first offend the lungs, the lungs are the source of water, the main transfer of water channels, transmission and distribution of fluids, cold attack on the lungs, so that the lungs do not declare and descend, fluids do not have normal transmission and distribution, water-damp stagnation and accumulation of phlegm; or vegetative body spleen and stomach weakness, eating less and drinking more, wanton eating cold, can block Yang Qi, deficiency of cold, so that the central state loss of transportation, water-damp internal stop, accumulation of moisture into phlegm; or kidney Yang deficiency, steam and no power, gas does not transform water, water-damp stagnation in the body can also become phlegm. Worry and qi knot, if plainly prone to anger, liver gas is not comfortable, it is long depression in the chest and fire, into the burning Jin for phlegm. Or congenital deficiency, or other diseases and kidney, or indiscriminate intercourse and lead to loss of essence and blood, kidney water deficiency, mother disease and child, water does not contain wood, and liver yin deficiency, liver and kidney yin deficiency, yin does not converge yang, then the false fire within the movement, burning Jin for phlegm, phlegm and fire agglomeration and become evil nucleus.