The classification of herniated intervertebral cervical disc types are clinically important, as treatment methods would be slightly different according to the specific type of the herniated disc. 423 patients who suffered from herniated intervertebral cervical discs were tested with Magnetic Resonance Imaging (MRI), to distinguish the type of the herniated discs. The followings are the results ; 1) The age of the patients tested ranged from 16 to 75 years old and the mean age of the patients was 41.4 years of age. 2) There were twice as many male patients, with a ratio of 288 : 135 men to women. 3) 101 patients suffered from single herniated discs, while 322 patients suffered from multi-herniated discs. 4) Of single herniated disc injuries, 52 patients had protruded discs (52%), while 25 patients had extruded discs (25%). 21 Patients (21%) had herniated intervertebral discs between $C_4{sim}C_5$, and 51 patients (50%), and had the same injury between $C_5$ and $C_6$. 5) Of multi-herniated disc injuries, 140 patients had protruded discs(44%). while 45 patients had extruded discs (14%). 54 patients had both protruded and extruded discs(17%). 36 patients(11%), herniated discs $C_3{sim}C_6$ ; 69 patients (21%), herniated discs $C_3{sim}C_7$ ; 47 patients(15%) herniated discs $C_4{sim}C_6$ and 67 patients(20%) herniated discs $C_5{sim}C_7$.