Objective:To analyze the main complications of deep vein thrombosis during its treatment and explore its causes and treatment and prevention measures.Methods:98 Cases of deep vein thrombosis undergone Fogarty catheter operation combined with thrombosis lysis and drug treatment were retrospectively analyzed.Results:78 examples are cured leaving hospital process smooth

being recovered; 6 examples curing process middle bleeding happened; The embolism queen collects 10 examples synthetically; Lethality pulmonary embolism 2 examples. Conclusions:Closely observation of the alteration of blood routine test and blood coagulation test can effectively prevent the occurrence of bleeding during the treatment of deep vein thrombosis. Venacaval filter screen may prevent the occurrence of pulmonary thrombosis. Elastic socks and proper anticoagulation treatment may decrease the ouurrence of postembolic syndrome.