Abstract: 　Objective　To investigate the utility of R1 latency of blink reflexes in typing of inherited polyneuropathy: Charcot-Marie-Tooth (CMT). Methods　Patients diagnosed with CMT by a genetic test underwent blink reflex testing and extremity NCS were retrospectively analyzed. Blink reflex R1 latency, extremity NCS, and severity were compared between demyelinating subtypes and axonal subtypes. Results　We included 24 demyelinating (14 males and 10 females) and 12 axonal (6 males and 6 females) CMT patients. R1-latency in demyelinating CMT group (14.41±0.73 ms) were longer than that in axonal CMT group (11.39±0.89 ms) (P<0.01). R1-latency were all >13 ms in demyelinating CMT group and ≤13 ms in axonal CMT group. Conclusions　Blink reflex test is reliable for identification of inherited demyelinating polyneuropathy regardless of severity and can guide genetic testing.