The purpose of this research is to offer basic data for Jean Pants by investigating the wearing conditions and behavior of female university students in Shanghai of China. The questionnaire was administered to 426 female university students in Shanghai of China. The data was analysed by percentage, mean and frequency. The result of the survey can be summarized as follows: First, The university students women is found to be wearing the blue jean three to four days weekly and the best perferred blue jean is of the straight style with the tight covering the foot bottom. Second, when they purchase their jean pants, the factor of decision was fit and design style.