Inguinal lymph node metastasis is a symptom that can be relieved by heat therapy. Lymph node metastasis refers to the malignant tumor cells through the lymphatic pathway, occurred in other parts of the body other than the original focus of the tumor lymph node metastasis. The lymphatic pathway is one of the major metastatic routes for malignant tumors. Inguinal lymph node metastasis can manifest with swelling of the lower limbs, pain in the inguinal area, and limitation of lower limb movement. Inguinal lymph node metastasis of malignant tumors can cause lymph node enlargement. If the enlargement is only slight, it can be helped by local hot compresses, etc. After a period of time, the symptoms will be relieved or disappear. However, the treatment of the tumor is still based on the treatment of the primary disease, chemotherapy or radiation therapy and other measures to control the swelling and pain of the lymph nodes. It is recommended that patients with inguinal lymph node metastasis should go to the hospital for ultrasound and pathology examination in time to clarify the cause and treat the symptoms, and keep a good attitude to cooperate with the doctor actively to avoid delaying the condition.