Multiple small retroperitoneal lymph nodes may cause abdominal pain, and patients may also experience high fever and chills. Patients are advised to take rest and adjust their diet in daily life. Retroperitoneal multiple small lymph nodes are caused by abdominal inflammation or neoplastic diseases, which will lead to the symptoms of abdominal pain. In addition to the symptoms of abdominal pain, patients will also have high fever, chills and other symptoms, and some patients will also have low-grade fever, abdominal distension, lumbago, back pain and other symptoms, or accompanied by vomiting, nausea, loss of appetite and other uncomfortable symptoms. Patients with multiple small retroperitoneal lymph nodes should get enough rest and avoid staying up late and overworking. Patients should improve their diet and reduce spicy and stimulating foods, such as chili peppers, onions and peppercorns. If there are multiple small retroperitoneal lymph nodes, they should go to the hospital to clarify the cause of the disease and be treated under the guidance of the doctor.