Objective：To analyze the lumbosacral magnetic resonance imaging（MRI） performance of spina bifida occulta（SBO） and lower extremity dysfunction in patients combined with spina bifida neurological scale score（SBNS），and to investigate the relationship between lumbosacral MRI performance of SBO and lower extremity dysfunction. Methods：The lumbosacral MRI was performed on 106 children with spina bifida occulta and lower extremity dysfunction. SBNS scale was used to evaluate the relationship between lum－bosacral MRI performance of SBO and lower extremity dysfunction. Results：The lower limb dysfunction manifested as mild motor dys－function and foot deformity according to simple lumbosacral MRI manifestation. The lower limb dysfunction manifested as severe mo－tor dysfunction and foot deformity according to complex lumbosacral MRI manifestation. There were statistical differences in SBNS score between simple MRI manifestation and complex MRI manifestation（t=4.548，P=0.023）. Conclusion：MRI is valuable in the di－agnosis of the SBO and associated malformations.The more serious the lower extremity dysfunction，the lower the SBNS score；the more complex the MRI manifestation，the more serious the spinal cord deformity. SBNS scale in meaningful in the evaluation of SBO and lower limb dysfunction.