AIM:To investigate the effect of vitrectomy in treat-ment of severe ocular trauma. METHODS: Seventy-five cases 77 eyes with severe ocular trauma were treated with vitrectomy in combination of IOL implantation,intraocular foreign body extraction,retinal reposition.RESULTS:After treatment,vision was improved in 63 eyes (85% );remained unchanged or worsened in 14 eyes(15%); foreign bodies in 18 eyes were extracted in one operation, the extraction rate was 100%;23 eyes had retinal detachment, the reposition rate after operation was 85%. Vitreous hematocde was occurred in 26 eyes, suppurative endophthalmitis was controlled. Secondary glaucoma was occurred in 5 eyes, the intraocular pressure was in normal range. CONCLUSION: Vitrectomy is an ideal method for severe ocular trauma.