Objective To study the thin section anatomy and HRCT of facial recess and its relative structures. Methods Thin sections were compared with HRCT scans.Facial recess and its relative structures in sequence were identified. Results Facial recess and its relative structures appeared in the 8th13th layers below the arcuate eminence.The emergence rates of facial nerve,facial recess,chordal eminence and chorda tympain nerve were all 100 percent,while the rate of ponticulus’s was 70 percent.From top to bottom, the distance from facial nerve to chorda tympani nerve became larger,and the largest distance was in the round window niche layer: right side was (5.20±0.06)mm,and left side was(5.16±0.09) mm in male,while right side was (5.16±0.05)mm,left side was (5.10±0.08)mm in female.The differences of two sides were not statistically evident(P>0.05).Conclusion The thin section collodion anatomy of temporal bone area,combined with the images of HRCT can clearly d