Uremic patients are prone to the following complications due to severely damaged renal function and long-term medication, leading to organ dysfunction and low immunity, which should be actively prevented. 1. Patients with infectious uremia are most prone to complications and serious infection. The most commonly used are upper respiratory tract infection, urinary tract infection and intestinal infection. Patients with uremia should take relevant protective measures, such as protecting the living environment, cleaning and ventilating; Pay attention to lower body hygiene and clean perineum every day; Pay attention to food hygiene, rinse your mouth after meals and reduce the growth of oral bacteria. 2. Prevention of thrombosis uremia patients lose a lot of protein every day. When protein is lost, an important anticoagulant factor-antithrombin ⅲ will also be lost in large quantities, and patients are prone to thrombosis. Among them, pulmonary embolism is the most serious. Once it happens, if it cannot be treated surgically, the patient is likely to die. Therefore, uremia patients should regularly review the coagulation function, and once hypercoagulability occurs, anticoagulant drugs should be used in time. 3. Prevention of upper gastrointestinal bleeding Uremia patients are prone to upper gastrointestinal bleeding, mainly because urease of intestinal bacteria decomposes urea into ammonia, which stimulates gastrointestinal mucosa and can cause inflammation and multiple superficial small ulcers. Patients with uremia should avoid eating food and hard objects that irritate the gastrointestinal tract, so as not to induce upper gastrointestinal bleeding.