Objective:To observe the effect of core stability training based on Bobath concept on motor function of children with spastic cerebral palsy (SCP). Methods: A total of 124 children with SCP were treated in the department of rehabilitation medicine of Children's Hospital of Nanjing Medical University from January 2018 to September 2019, which were divided into the control group and the observation group according to the random number table, with 62 cases in each group. The control group was given conventional rehabilitation treatment, which mainly included anti-spasm (joint movement, passive traction), homework, language, massage, sports training (trunk rotation, hip adduction, pelvic pronation and control, limb movement, standing and balance, walking with legs raised, knee bending), one time a day, 40 min a time, six days a week, continuous treatment for three months. The observation group was given core stability training based on Bobath's concept on the basis of the control group, which mainly included static training (hip extension, hip, knee and ankle flexion, point support, bridge training, etc.) and dynamic training (paddling, trunk support, trunk rotation, chase toy etc.), one time a day, 80 min a time, six days a week, continuous treatment for three months. After treatment for three months, the modified Ashworth scale (MAS) was used to assess spasticity; Before treatment and after treatment for one month and three months, the Peabody development motor scale-fine motor (PDMS-FM) was used to assess fine motor function, and the gross motor function measure-88(GMFM-88) was used to assess gross motor function, the Berg balance scale (BBS) was used to assess balance ability, and the activity of daily living scale (ADL) was used to assess the ability of daily living.Results:There was no significant difference in the PDMS-FM, GMFM-88, BBS and ADL scores of the control group and the observation group before treatment (P> 0.05). After treatment for three months, the effective rate of spasticity improvement in the observation group was higher than that in the control group, the difference was statistically significant (P< 0.05). Compared with before treatment, the PDMS-FM, GMFM-88, BBS and ADL scores in the control group and the observation group after treatment for one month and three months were higher; compared with the treatment after one month, the PDMS-FM, GMFM-88, BBS and ADL scores in the control group and the observation group after treatment for three months were higher, the difference was statistically significant (P< 0.05). Compared with the control group at the same time, the PDMS-FM, GMFM-88, BBS and ADL scores in the observation group were higher, the difference was statistically significant (P< 0.05).Conclusion:The core stability training based on Bobath concept can effectively improve the spasticity symptoms, motor function, balance function and activities of daily living of children with SCP, it's worthy of further clinical promotion.