Pregnancy-induced pelvic girdle pain (PGP) and low back pain (LBP) is common in post-natal women's. We conducted the study to evaluate the effectiveness of a modified sacroiliac belt on pelvic girdle pain in post-natal women. A total of 26 post-natal women between the age group of 18-35 years were selected and randomized into Group 1(N=13) received conventional sacroiliac belt, conventional physiotherapy and Group 2 (n=13) received modified sacroiliac belt along with conventional physiotherapy. Pre-assessment of pelvic girdle was assessed by (Pelvic Girdle Pain Questionnaire) PGPQ, and low back pain was assessed by Roland Morris low back pain and disability questionnaire (RMQ) and Post-interventional assessment was taken for the same after three months. Intragroup statistical analysis for PGPQ revealed not significant in post-intervention for Group 1 where P-value 0.3023 and was extremely significant for Group 2 (P value<0.0001). At the same time, the Intergroup intervention analysis showed an extremely significant difference between Group 1and Group 2 (p< 0.0001). The study concluded that Integrating Modified sacroiliac belt with conventional physiotherapy is more effective in reducing pelvic girdle pain in post-natal women with also benefiting to reduce the pregnancy-induced low back pain as compared to the conventional sacroiliac belt and conventional physiotherapy.