The main aim of this double blind randomized clinical trial was to determine and compare the results and complications of using Catgut chromic (biologic ) and Vicryl rapide (sytlthetic) as a suture material in episitomy

  repair. 46 primiparus women were entered in this study randomly. Episiotomy of 2/ women were rep aired by

  Vicryl rapide and 25 by Catgut chromic. These two groups were matched try age, duration of second stage of labor,

  newborn's weight, women's education, number of sutures 0 11 the skin and socioeconomic status. The results of this

  study revealed that women in Catgut chromic group experienced more pain than. Vicryl rapide group ten days after

  delivery (RR =0. / 3, C/=0.04 -0.5,P< 0.05 ).In addition edema (RR= 0.33·0.88,P<0. 05) and redness (RR=0.76,

  CI =0.6-0.9,P<0.05) of episiotomy site in Catgut chromic group was more prominent than in Vicryl rapiae group

  6-24 hours after delivery. Also in the tenth day after delivery 95% of Vicryl rapide sutures were absorbed from the

  skin while this occured only for 4% of Catgut chromic sutures (RR =0.09, C/= 0.03,P<0.05) . So we therefore