AIM:To observe the curative effect of the simple operation on pterygium and the operation on pterygium with the application Kenacort A and 20g/L Mitomycin.·METHODS:Seventy-two cases 80 eyes were divided randomly into two group with 36 cases each,namely group A:adopting the simple operation on pterygium and group B:adopting the operation on pterygium with the injection of about 0.2mL Kenacort A and 20g/L Mitomycin (1∶1)in the bulbar conjunctiva of the carunculae lacrimalis and after operations the epithelium cornea restoration,the new vessels of corneal limbus,the recidivation of pterygium were observed.·RESULTS:During 6-36 months’ postoperative follow-up,there were 14 eyes recidivated in group A,but only one in group B.·CONCLUSION:There is an obvious contrast in curative effect of the simple operation on pterygium and the operation on pterygium with the application of Kenacort A and 20g/L Mitomycin,the recurrence rate of the latter is much lower than the former and the latter prevents pterygium from recurring.In the mean time,this technique is simple and it is much safer for the patients.So it is worthy to advocate to ophthalmic surgery.