Swollen inguinal lymph nodes can be caused by a variety of reasons, commonly including lymphadenitis, lymph node tuberculosis, and lymphoma. If the inguinal lymph nodes are swollen for unknown reasons, it is recommended to go to the hospital in time to clarify the cause and treat it in time to avoid delaying the disease and causing serious consequences. 1. Lymphadenitis: mostly due to local injury, infection and the spread of surrounding inflammation, mainly manifested as inguinal lymph node redness and swelling, accompanied by pain or pressure pain. Treatment is mainly the application of antibiotic drugs, such as penicillin, cephalosporin, etc. to control inflammation and infection, but also under the guidance of Chinese medicine practitioners can take some Chinese medicine to clear heat and detoxify, such as Bazheng San, Gentian Diarrhea Liver Pills, Xihuang Wan, etc.; 2, lymph node tuberculosis: mainly caused by Mycobacterium tuberculosis infection, often appear inguinal lymph nodes red, swollen, hot, painful, can form abscesses or sinus tracts, usually also accompanied by fever, night sweats, wasting and other Symptoms. It should be treated with anti-tuberculosis drugs, such as isoniazid and rifampicin, systematically and under the guidance of a doctor. 3. Lymphoma: The causes are mostly related to infection, immunity and genetics, etc. It is mostly manifested by progressive and painless enlargement of inguinal lymph nodes, which are hard and can fuse with each other. Pathological examination can be performed to help confirm the diagnosis. There are many types of lymphoma, which are often treated with various chemotherapeutic drugs, such as cyclophosphamide, vincristine, etc. Standardized and individualized treatment is needed according to specific conditions; 4. Other: they may belong to subcutaneous fibroma or lipoma, which patients mistake for enlarged lymph nodes. In addition, it may be metastasis from malignant tumors of surrounding organs to inguinal lymph nodes, such as colon cancer, rectal cancer, and metastasis from penile cancer, prostate cancer in men, or cervical cancer in women. For patients with subcutaneous fibroids or lipomas, they can be surgically removed according to medical advice. For patients with metastasis of malignant tumors, the primary lesion should be actively identified and surgically removed, followed by radiation therapy, chemotherapy, immunotherapy and other comprehensive treatments to facilitate the prognosis of patients. In addition to active medical treatment, patients should also arrange a reasonable diet with less spicy and stimulating food, and a light diet with balanced nutrition. Quit smoking and limit alcohol, maintain an optimistic mood and a healthy state of mind is also beneficial to the recovery of the disease.