ABSTRACT: Aim: To evaluate post-operative outcomes of anterior iliac bone graft after alveolar bone grafting in cleft patients with and without surgical drain. Methodology: Forty patients with cleft alveolus were randomly selected and divided into two groups. Group 1 consisted of 20 patients (assessment finished drain attached to iliac graft) and Group 2 consisted of 20 patients (assessment steer clear off drain in respect to iliac graft). Evaluation was finished the assistance of questionnaire in terms of pain (with the assistance of visual analogue scale starting from 1-10), gait (through observation), infection and wound healing (through clinical examination) in both the groups. Chi square test was employed to gauge the comparison between various variables. Results: In our study we observed that post-operatively on day 1, patients in both group I and II, mostly were tormented by unbearable pain which was however controlled with high dose IV analgesics. By day 3, pain intensity dropped in patients without drain which was statistically significant (p=0.032). In Group I patients, around 54 available around 20-29 ml of fluid collection through the drain on day 1, which led to extreme discomfort for the patients and was statistically significant further (p=0.032).