Purpose: This study aims to investigate the influences of the relative factors of the Theory of Planned Behavior on physical activity among employees of financial industries in Taipei city and New Taipei city. Methods: A total of 643 financial employees were selected by using a stratified random sampling method. The response rate was 83%. The information about Theory of Planned Behavior variables, physical activity, and personal background were collected with a self-administered questionnaire. Results: Perceived behavioral control variable was the most significant predictors of physical activity intention. Health status and physical activity intention were predictors to know whether or not the financial employees exercised regularly. Suggestion: In order to promote the health of financial employees, escalating the control beliefs and perceptivities of financial staff and eliminating their obstacle factors of physical activities were necessary. Increasing their self-efficacy of physical activity, financial employees can form a habit of exercising regularly and develop an appropriate health promotion project.