This study was conducted on branch managers of Chinese and Western fast food restaurants in Taiwan, ROC. The objective of this study was to investigate branch manager's job satisfaction and to analyze the relationship of job satisfaction, service orientation and intention to leave. Chinese fast food restaurant-Mercuries Group and Western fast food restaurant-McDonald were selected for this study. The data obtained from a survey based on designed questionnaire for 122 branch managers of Chinese fast food restaurant and 245 branch managers of Western fast food restaurant in May, 1998. Chinese: 86 copies of which (70.50%) are returned, 84 copies are found to be effective (68.85%); Western:202 copies of which (82.45%) are returned, 196 copies are found to be effective (80%). The statistical methods of Scheffe-test (α=0.05), One way ANOVA and Analysis Correlation were used to analyzing. The major findings are as follows: 1.The job satisfaction factors are designated as supervisor, staff, promotion, salary and work properties. The highest job satisfaction factor of both Chinese and Western branch managers is shown to be supervisor. The most dissatisfactory factor of both Chinese and Western branch managers is promotion. 2.Female branch managers of Chinese fast food restaurants are shown to be lower in job satisfaction than that of male. On the contrary, female branch managers of Western fast food restaurants are shown to be higher in job satisfaction than that of male. The branch manager of both types restaurants with higher education level is shown to be more dissatisfactory in his job. 3.The demographic variables are designated as sex, age, marrriage, education, working period, and work experience. Branch managers of both types restaurants at higher level of age, working period, education and work experience are shown to have more service orientation. 4.Branch managers of both types restaurants at higher level of age and working period are shown to be less intention for leaving their jobs. Branch managers of Chinese fast food restaurants at high school level or single are shown to have higher intention for leaving their jobs. Branch managers of Western fast food restaurants at below 25 years old or 3-4 years working period are shown to have higher intention for leaving their jobs. 5.There is a positive correlation between job satisfaction and service orientation in both types restaurants in which branch managers with higher job satisfaction are shown to have higher service orientation. 6.There is a negative correlation between job satisfaction and intention to leave in both types restaurants in which branch managers were more dissatisfactory to their jobs are shown to have higher intention for leaving their jobs.