Abstract: Objective To explore the technique that distinguish pseudo-anacousia. Methods 60 cases were divided into three groups ( normal group, deafness sensorineura group and pretending hearing loss group). They all had been tested by distortion products otoacoustic emissions technique . Results (1) The DPOAE incidence of normal group is 94.00%. the DPOAE incidence of deafness sensorineura group is 22.00%.There were significant differences at statistics in DPOAE incidence (P<0.01). those proved that patients (deafness sensorineura group ) were in hearing problem . (2) The DPOAE incidence of pretending hearing loss group is 93.00%,there were no significant differences at statistics in DPOAE incidence between normal group and pretending hearing loss group (P>0.01), furthermore when behavior threshold is over 50 dBHL , DPOAE incidence is no score . Conclusion This study shows the technique can distinguish pretending hearing loss . The application of DPOAE can be used as a new tool in cases assessment of clinic forensic medicine.

Key words: pseudo-anacousia, distortion products otoacoustic emissions, sensorineural hearing loss, medicole-gal expertise