Multiple lymph nodes in the abdominal cavity refers to abnormal changes in the lymphatic structures in the abdominal cavity, such as enlarged lymph nodes or changes in the shape of the lymph nodes, which may be caused by lymphadenitis, lymphoma or other lesions. 1. Lymphadenitis: Because lymphadenitis can cause the relative lymph nodes to become enlarged, it can lead to abnormal changes in the lymphatic structures and the appearance of multiple lymph nodes in the abdominal cavity. 2. Lymphoma: If lymphoma is encountered, it will also cause the relative lymph nodes to become enlarged, and multiple lymph nodes in the abdominal cavity are likely to occur. 3. other lesions: for example, gastrointestinal tumors with cancer cells spreading to the lymph nodes will also cause lymph node enlargement and multiple lymph nodes in the abdominal cavity. If encountering multiple lymph nodes in the abdominal cavity, one should take into account the actual situation and adopt reasonable treatments under the guidance of doctors, and avoid blindly using medicines, so as to avoid delaying the opportunity of illness.