To determine the patient’s enlarged lymph nodes, mainly by visual examination and palpation, we have to select the parts where the lymph nodes are distributed, including anterior ear, posterior ear, jaw, anterior neck, posterior neck, supraclavicular, axillary fossa, upper side of elbow joint, groin, popliteal fossa, and the common conditions are as follows: 1. Visual examination: when looking with the eyes, we can find local skin bumps, and some patients can have changes in surface skin color. 2. Palpation: when touching with hands, we can feel The surface of inflammatory masses is generally smooth, and there are no adhesions between multiple masses at the same time, and the mobility is good. However, for lymph node enlargement caused by malignant tumor or tuberculosis, the masses can be palpated to adhere to each other and to the surrounding tissues, which are not easy to push, and there is usually no obvious pressure pain.