ObjectiveTo investigate the feasible and effective means for the lower extremity deep ve nous thrombosis(DVT).Methods The clincal data of 211cases of l ower extremity DVT treated in recent 9 years were analysed retrospectively .Antegrade infusion of high -dose urokinase was performed via the dorsalis pedi s vein of the involved lower limb in 179 patients.Of the 179 patients vena cava filters(VCF) was placed in 29 patients,including Tempofilter II VCF in 5pa tients, VenaTech TM LP VCF in 24patients.Other 32 cases underwent embol ectomy after IVC filter placement(Tempofilter II was placed in 6patients, VenaT echTM LP was placed in 26patients). Results 146 patients were followed up for 3-108 months with averge 54months .A total of 61 IVC filters w ere successfully expanded ,but 1 Tempofilter II VCF was migrated to proximal end of IVC.Tempofilter II VCF was taked out 2-4 week after the IVC filt er placement . VenaTechTM LP occlusion in one case 14 months after the IVC fil ter placement.In thrombolytic group,87were cured,86 improved,6 ineffective. In operative group, 28were cured,3 improved,1 ineffective . The cured rate in op erative group was better than that in thrombolytic group(P