This study was designed to identify the construct validity of the six career types of Holland´s hexagonal model, and to test the appropriateness of the model. The subjects for this study were 880 Chinese high school students, balanced by sex and proportional to grade (10th and 12th) in Taipei, Taiwan, the Republic of China. Subjects were acquired by sampling a proportionate number of students from three major types of high schools: namely, senior high school, industrial high school, and commercial high school. The measure utilized in the assessment of the Holland´s six career types was an adaptation and Chinese translation of the Self-Directed Search (SDS), which was developed by using the following procedures: (1) Back-translation technique; (2) Pilot test and revision; and (3) Item analysis of the revised, translation. Based on the data of reliability, convergent and discriminant validity, and construct validity, the Chinese SDS is to some extent an equivalent measure of Holland´s typology. In general, the results of factor analyses supported the factorial structure of Holland´s hexagonal model. The only exception was that the Social and Enterprising types were combined into one factor for male and female samples. By utilizing the Wakefield and Doughtie´s spatial analysis, the psychological resemblances among types confirmed the hexagon model proposed by Holland, yet the hexagon formed was a bell-shaped one. The bellshaped figure, with R and I in the upper portion and A, S, E, C in the lower portion, implies that the perception of Chinese high school students can be classified into two primary categories, the natural sciences and the humanistic-social sciences. However, sex differences were found in these categories. Males were better than females in differentiating the R and I types, while females were better than males´ in distinguishing the A-SE-C types except for the distance between S add E types.