Lymph node dissection is suitable for the treatment of tumor lymphatic metastasis and other conditions, and its surgical process includes preoperative preparation, intraoperative clearance, postoperative recovery and other processes. 1. Preoperative preparation: (1) As preoperative imaging and pathological examination of the diseased lymph nodes are required, it is necessary to cooperate with the physician to complete puncture biopsy and other operations. (2) Before the operation, we will inform you of the risks, and if you have any doubts about the procedure and complications, you can ask. 2. Intraoperative clearance: The surgery is usually performed under general anesthesia, and the diseased lymph nodes will be removed under minimally invasive or exposed conditions, while the surrounding lymphatic tissues will be cleared according to the specific conditions. The excised tissues will be examined pathologically to clarify the lesions. 3. Post-operative recovery: After the surgery, we should pay attention to the incision condition and inform the doctor if there is blood seepage, etc.; change the medicine regularly, pay attention to the wound cleanliness, and avoid stimulating diet; pay attention to the tracking of the pathological examination results. Whether to perform lymph node dissection and the extent of dissection should be determined by the clinician, and it is recommended to actively cooperate with the treatment.