Lymph nodes are part of the immune organs in the body and are distributed throughout the body. Some lymph nodes are closer to the skin on the body surface, which are superficial lymph nodes, and many immune cells are stored in them. Generally, superficial lymph nodes cannot be touched, but when the body is infected by bacteria or viruses, such as colds and abscesses on the body surface, they will lead to enlarged lymph nodes, and superficial lymph nodes can be touched, and round swellings can be touched on the body surface, and ultrasound They can also be seen on ultrasound, etc. However, other diseases can also cause superficial lymph node enlargement, such as tuberculosis, autoimmune system diseases, hematologic diseases, and even lymph node metastasis of malignant tumors. Therefore, if superficial lymph nodes can be palpated, it is best to go to a doctor first to check the cause, and not to eat too spicy food or drink alcohol during the enlargement, and to drink more water appropriately.