The treatment modalities for extra large abdominal tumors include surgical treatment, radiotherapy and chemotherapy. Before treatment, the nature and location of the tumor, the presence of peripheral infiltration and distant metastasis must be clarified. Before treatment, perfect abdominal CT, pathological biopsy and other related examinations to clarify the nature and stage of the tumor, and then formulate the treatment plan after evaluation by professional doctors. If the abdominal tumor is benign, it can be treated by surgical resection. If the tumor is malignant without peripheral infiltration and metastasis, assess the feasibility of surgery, and perform surgery if possible; if not, choose chemotherapy, and then perform surgery after the tumor shrinks partially. If the tumor is malignant with metastasis, then the feasibility of surgery is relatively small, choose chemotherapy or radiotherapy treatment. If you have a large tumor in the abdominal cavity, you should consult the hospital in time and follow the doctor’s instructions for reasonable treatment.