Inguinal lymph node enlargement should be examined by visual examination, palpation, blood test and local ultrasound. 1. Visual diagnosis: Visual diagnosis is mainly to note whether there is any local skin elevation, skin color, skin rash, scar, fistula and so on. 2. Palpation: Palpation is the main examination method of inguinal lymph nodes, generally the examiner’s finger, middle finger and ring finger together, sliding palpation on the skin, when the lymph nodes are found to be enlarged, attention should be paid to their size, location, number, hardness, mobility, and the presence or absence of tenderness. 3. Blood routine: usually there are increased white blood cell and neutrophil counts. 4. Local ultrasound: to measure the number and size of enlarged lymph nodes, high-frequency ultrasound combined with color Doppler flow imaging can clearly show the size, shape, border, internal echoes and blood supply of the mass, which can provide a reliable basis for clinical examination. It is recommended that patients with enlarged inguinal lymph nodes should go to regular hospitals in time for diagnosis and suitable examination under the guidance of professional doctors, and targeted treatment.