INTRODUCTION: Cerebral palsy (CP) is characterized by postural, functional and tonus dysfunctions due to lesions in the Central Nervous System in the maturation phase. Physiotherapy inserts itself in the treatment of CP aiming to normalize dysfunctions, providing higher quality of life and autonomy. One of the most used methods for the treatment of these patients is the Bobath Neurodevelopmental Treatment (NDT). The prognosis and efficacy of treatment can be measured through instruments such as GMFM. OBJECTIVES: To evaluate the physiotherapeutic treatment based on NDT through the GMFM-88 scale in children with CP before and after intervention, quantitatively observing the evolution. METHODOLOGY: 8 patients were submitted to the GMFM scale before and after physiotherapeutic treatment. The treatment was carried out in the discipline of Pediatrics of a Community University. Quantitative data were tabulated and analyzed using simple descriptive statistics and GMAE-2 Software. RESULTS: A general evolution was observed in the neuropsychomotor development of patients or the maintenance of their condition. CONCLUSION: The results demonstrate that the physiotherapeutic treatment based on the Bobath Neurodevelopmental Treatment is effective for the evolution or maintenance of the gross motor function of the patients and that the GMFM instrument is effective in showing these results quantitatively. KEYWORDS: motor activity, cerebral palsy, proprioception, physiotherapy.