The purpose of this study was to analysis of design preference according to age of consumers in order to obtain basic informations which are necessary for the development of designs that can satisfy the needs and desire of Chinese consumers. The style, color, fabric pattern, fabric, image, and shape of clothing were used for design preference variations. The study was implemented by surveying 280 females living in Beijing, China. The results were as follows: 1) There were significant differences in the preference of style of outdoor clothes according to age. Chinese women in the age of twenties and fifties prefer to wear casual clothes. Preference ratio was more than 60% 2) There were significant differences in the preference of color of spring and summer clothes, but there was no difference in the preference of color of autumn and winter clothes. 3) There was a difference in the preference of fabric pattern of outdoor clothes. Generally Chinese women showed 50% of preference for the no patterned outdoor clothes. 4) There were no differences in the preference of fabric materials. Preferred material for spring and summer was cotton fabrics, and that for autumn and winter was woolen fabrics. 5) In the research of the preferred image of outdoor clothes, generally Chinese women showed the most preference for elegance style. Chines women who are in the age of thirties to forties preferred feminine style. However, Chinese women who are in the age of fifties like to choose simple style. 6) There was a significant difference in the preference of length of jacket and skirt, and generally Chinese women preferred to wear medium length of jacket and skirt. There was no difference in the preference of design of collar and shape of pants. However most Chinese women showed preference for tailored collar and straight shaped pants.