Objective  To explore the application of image post-processing techniques after X-ray computer (computed radiography, CR) and direct digital X-ray photography (digital radiography, DR) in investigating anatomic features of styloid process in vivo.  Methods  210 volunteers with normal styloid processes underwent CR and DR. Based on the initial film, 4 kinds of postprocessing skills, including reversing, margin sharpening, window technique, magnifying and one combination with the other were performed. The length and inclination angle of styloid processes were measured. Results  The average length of styloid processes was （24.34±3.55）mm,  the average anterior inclination angle （19.21±3.08）°, and the medial anterior inclination angle （24.16±4.28）° respectively. Conclusions  CR and DR combination postprocessing demonstrates styloid processes in vivo clearly and accurately，among which film reversing is the most valuable.