One part of the swollen mesenteric lymph nodes is not serious, and the other part is more serious and needs to look at the causative factors causing the swollen lymph nodes, as follows. Patients can go to the hospital to improve relevant examinations, such as blood routine, C-reactive protein, etc., and give medication according to the results, while adjusting the diet structure, such as not drinking drinks containing alcohol, not eating too spicy food, and then increasing rest, the enlarged lymph nodes can gradually subside. If the enlarged lymph nodes are considered to be caused by malignant tumor, it is very serious because it often indicates that the tumor has progressed to the middle stage or even the final stage, so it is necessary to improve the relevant examination as soon as possible and perform radical resection of the tumor.