Objective: To evaluate the effects of traditional massage (TM) on spasticity and gross motor function in children with cerebral palsy (CP). Methods: This randomized control trial (RCT) was conducted with recruitment of 86 children (Dropped out= 11; Analyzed= 75) with spastic CP (diplegia) allocated randomly through sealed envelope method to intervention and control group with ages between 2-10 years from September 2016 to August 2018. Both groups received conventional physical therapy (CPT) once daily, five times a week for a period of three months. However, intervention group received TM additionally. Modified Ashworth Scale (MAS), Gross Motor Function Measure (GMFM-88) and Gross Motor Function Classification System (GMFCS) were used to evaluate spasticity and gross motor function at the beginning, after six and 12 weeks of intervention. Data were compared and analyzed through SPSS-20. Results: Mean age in control and intervention group was 6.81±2.31 and 7.05±2.47 years respectively. No statistically significant differences in MAS, GMFM and GMFCS scores were found at base line. The children in intervention group showed statistically significant reduction in MAS scores in all four limbs after six and 12 weeks of intervention (p < 0.05) in comparison with the control group. However, GMFM scores and GMFCS levels did not change significantly in intervention group as compared to control group. Conclusion: It is concluded that TM can effectively reduce the spasticity, does not have harmful effects, so can be administered safely by mothers at home and making it suitable for the management of spastic CP. However, in order to achieve better gross motor function, it should be practiced in conjunction with CPT, functional skills and task oriented approaches.