Very few references mentioned about the cervical prevertebral soft tissue density in Asian population. We examined 150 patients with routine cervical spine radiographic films from January 2000 to July 2000. The prevertebral soft tissue thicknesses were measured from C1 to C7 to measure the preverte-bral soft tissue thickness to compare with the data between the oriental people and western people in normal subjects. The results were recorded for statistical analysis and compared with western population. 131 patients were recorded. We found that there were significant difference noted at C6 prevertebral soft tissue thickness between young (n=106) and old (n=25) aged population (p<0.01). There was also significant difference between female (n=79) and male(n=52) at C6 prevertebral soft tissue thickness(p<0.01). The prevertebral soft tissue thickness was founded statistically thicker in male than female in C6 level. It was also thicker at C6 level in elderly than young ones. There was no difference at other cervical levels. There is no difference between our data and data from western population.