Objective : To investigate the change of latency of cervical dermatomal somatosensory evoked potential (DSEP) according to stimulation intensity (SI) and severity of carpal tunnel syndrome (CTS). Methods : Stimulation sites were the C6, C7, and C8 dermatomal areas. Two stimulation intensities $1.5{ imes}$sensory threshold (ST) and $2.5{ imes}ST$ were used on both normal and CTS patients. Results : In moderate CTS, the latencies of C6 and C7 DSEP during $1.5{ imes}ST$ SI and those of C7 DSEP during $2.5{ imes}ST$ SI were significantly delayed compared with the values of normal subjects. Significant correlation between the latency of C7 DSEP of $2.5{ imes}ST$ stimulation and the median sensory nerve conduction velocity was observed. Conclusion : We suggest that these data can aid in the diagnosis of cervical sensory radiculopathy using low stimulation intensity and of those who have cervical sensory radiculopathy combined with CTS patients.