Peritoneal lymph node metastasis is mainly caused by distant metastasis of malignant tumors, which needs to be actively treated with radiotherapy or targeted drug therapy under the guidance of doctors. Gastric cancer, liver cancer, pancreatic cancer, colorectal cancer and other malignant tumors may have peritoneal lymph node metastasis, which can be effectively inhibited by radiotherapy (see the next paragraph for the drugs used) and targeted therapy (see the next paragraph for the drugs used) to inhibit the malignant proliferation and distant metastasis of tumors, reduce the tumor foci, and improve the prognosis of the disease. Commonly used chemotherapeutic drugs include cytarabine, cyclophosphamide, paclitaxel, vincristine, etc. Commonly used targeted drugs include gefitinib, imatinib and other drugs. Due to individual differences, the drugs need to be selected under the advice of the doctor to best suit their own drugs, adverse reactions should be timely medical treatment, drug allergy is prohibited. In addition, peritoneal lymph node metastasis is also described as the transfer of tuberculosis from other parts of the body to the peritoneal lymph, such as tuberculosis of the lungs, bone tuberculosis and so on. At this time, it is often accompanied by low fever in the afternoon, night sweats, weakness and other symptoms of tuberculosis poisoning, and needs to be combined with the application of isoniazid, rifampicin, ethambutol and other drugs for anti-tuberculosis treatment.