Background: Cerebral Palsy called as little’s disease. Altered postural tone, affects their ability to organize and control voluntary movements effectively, producing abnormal patterns that compromise their performance during daily live activities and increase the risk of secondary complications such as contractures and deformities, pressure sores, swallowing impairments, pain. Objective: To study the effect of sleep behavior on posture in children with cerebral palsy Materials and methods: 30 participants were included in this study, and the project was carried out using Chailey Sleep Questionnaire. Result: Orthopedic problems (scoliosis) are graded as (mild) 10%, (moderate) 3% (kyphosis) graded as (mild) 26.6%, (moderate) 26.6% and (severe) 3.33% Conclusion: The present study concluded incorrect sleeping positions can lead to the development of various postural deformities, thereby increasing orthopaedic deformities, particularly kyphosis. Hence hourly change of positions during sleep is essential. Keywords: chailey sleep questionnaire, posture, kyphosis, scoliosis