Background: Cerebral palsy is defined as a non-progressive insult to a developing or immature central nervous system (CNS), particularly to those areas that affect motor function. People with spastic cerebral palsy, the stabilization of the rib cage is not proper so with each respiration there occurs flaring of the lower ribs, which should otherwise be fixated by abdominals so as to provide diaphragm with a stable base to contract upon. A disturbance in this synergy causes the whole process to become inefficient. Purpose of the study: The aim of this study is to find out an effective method to improve chest expansion in spastic Cerebral palsy children. Method: 50 Spastic cerebral palsy children of both genders with age 5-12 years satisfying inclusion criteria were included for the study. The children were taken in supine position on the mat/plinth and were made to relax. Then command was given to exhale as much as possible and hold the position to take the chest circumference at the maximal voluntary expiration (Cexp).This was followed by deep breath as much as possible and was held for chest circumference at the maximal voluntary inspiration (Cinsp). The children were made to practice this process and then the mean of the highest value of Cinsp and the lowest value of Cexp difference in best three attempts were recorded for all the children. The chest measurements were taken at three levels at axilla, nipple level and tip of xyphoid process. These readings were documented as Pre Test Score. Myofascial release was given to the Pectorals (major and minor) bilaterally, Rib cage (Intercostals), anterior chest wall and the Diaphragm, with the subject in supine position.Post treatment data was taken and statistical analysis was performed. Results: The difference of the pre and post readings of the expansion at the axilla level shows a mean difference of 0.42 which is significant statistically, p value being __ampersandsignlt;0.000, at the nipple level shows a significant difference, the difference being 0.54 and the p value __ampersandsignlt;0.000. Similarly the difference of the readings at the xiphoid process level 0.53 is significant, p value being __ampersandsignlt;0.000. Conclusion: The result shows that the chest expansion increased significantly at all the three levels.The expansion improved maximally at the nipple level.