To investigate the magnetic resonance imaging (MRI) features of the spinal cord decompression sickness (DCS) on compressed air divers, we hereby report seven cases diagnosed with spinal cord DCS.Only two patients out of seven showed positive MRI findings on whom a detailed case report will be provided.In one of the cases, the MRI revealed extensive high signal within central gray matter of the spinal cord.The other one showed patchy high signal on T2 weighted images as well as diffusion weighted images (DWI) in the dorsal column white matter of the spinal cord.We believed that the MRI focused on spinal cord is not always appropriate for obtaining a quick diagnosis.The discrepancy between MRI findings and clinical evolution leads to the conclusion that MRI focused on the spinal cord is not always correlate with neurological improvement.Decision for hyperbaric oxygen treatment (HBOT) should not primarily be based on MRI findings.