The purpose of this study is to examine the phonological awareness ability of preschool children with speech disorders. Subjects were composed of 18 articulatorily-disordered preschool children and 18 phonologically-disordered children of 4-6 years old. Percent of correct consonants and phonological awareness ability were tested. Results showed as follows: First, there was no remarkable difference between the two groups in percent of correct consonants. Second, the average of the total scores of the phonological awareness test showed a remarkable difference between the two groups. The same result was found in the small groups classified by the age. Because there was a remarkable difference in the phonological awareness ability in the test groups, the phonological awareness ability can be employed as an important parameter to distinguish articulatorily-disordered children from phonologically-disordered children.