The inguinal lymph nodes are generally located along the inguinal ligaments on both sides, specifically from the anterior superior iliac spine to the pubic tubercle. Lymph nodes are important immune organs of the body. The inguinal lymph nodes are distributed along the inguinal ligaments on both sides, generally from the anterior superior iliac spine to the pubic symphysis, and may be difficult to reach under normal circumstances. When inflammation occurs in the lower limbs or perineum, such as bacterial or viral infections leading to salpingitis, boils, lymphadenitis, etc., the inguinal lymph nodes on the diseased side may become enlarged, which is more obvious when lying down and can be relieved by antibiotic treatments such as amoxicillin, cefaclor, etc. The lymph nodes may be enlarged and painful. Metastasis of malignant tumors in the lower limbs or perineum can also lead to inguinal lymph node enlargement. In addition to the treatment of primary malignant tumors, the inguinal lymph nodes also need to be treated with radiotherapy and other appropriate treatments.