Surgery, radiotherapy, chemotherapy and other methods can be carried out for descending duodenal lymphangioma. 1. Surgery: In the early stage of duodenal descending lymphangioma, if there is no metastasis, surgery can be performed to remove the tumor, and then rehabilitation can be carried out. 2. Radiation therapy: tumor radiation therapy with α, β, γ rays and all kinds of x-ray therapy machines or gas pedals produce x-rays, electron beams, proton beams and other particle beams, etc., which is suitable for middle and late stage duodenal descending lymphangiomas to make the tumor cells undergo necrosis to achieve the therapeutic purpose. 3. Chemotherapy: It is a kind of treatment that utilizes chemical drugs such as mitomycin, cisplatin, 5-fluorouracil, etc. to prevent proliferation, infiltration and metastasis of cancer cells until the cancer cells are finally killed. It is a kind of systemic treatment, which is mainly applied to some tumors after surgery, advanced tumors, and can not be used in the case of surgery. If the diagnosis of descending duodenal lymphangioma is confirmed, early and standardized treatment is recommended to reduce the adverse effects of the disease.