Immediate implant placement had shown high success rate in the last decades. However, studies showed that gingival recession is common following immediate implant placement. Moreover, it has been shown that the average human gingival tissue thickness could not mask the implant color. Therefore, it was recommended to perform soft tissue augmentation in conjunction with immediate implant to enhance the biotype and in accordance with the esthetics. The aim of the present study was to compare the efficacy of Platelet Rich Fibrin to the sub-epithelial connective tissue graft in soft tissue augmentation.16 implants were placed in 14 patients; 8 implants for each group and measured the change in keratinized tissue width and thickness every 1,3 and 6 months. Final restorations were fabricated and fixed at 6th month postoperative.In the current study, the optimum mean gingival tissue thickness in PRF group at 6 months was 1.67 mm while in SCTG group was 2.24 mm.The difference between the two techniques was statistically significant and clinically SCTG resulted in better soft tissue contour. The results of the present study showed that, there was no statistically significant difference in keratinized tissue width between the two techniques at the baseline and through all the follow-up periods. The mean of width of keratinized gingiva in PRF group at 6 months was 4.06 mm while in SCTG group was 4.56 mm.Therefore, it could be concluded thatthe two techniques resulted in increase in the soft tissue thickness and enhancement of the esthetics.