Whether lymph node dissection will have any effect on the human body should be analyzed according to the specific condition of the patient. First, if the patient’s lymph nodes are enlarged due to local infectious lesions, simple lymph node dissection will not have serious effects on the human body. On the contrary, after removing the lymph nodes, the local pain symptoms can be reduced. Secondly, if the patient’s tumor invades the local lymph nodes, the resection of the primary tumor should be performed together with the resection of the local lymph nodes. This will reduce the metastasis of the tumor along the lymph nodes, which is good for human body. For patients with lymphoma, if extensive lymph node dissection is performed, it is very likely to cause postoperative lymphatic fistula, and patients will have long-term oozing of fluid from the incision. Especially the lymphatic fistula located in the root of thigh will cause obvious swelling of limb and limitation of activity, which will have more serious impact on the normal life of patients.