Three arms of experimental design were used: Pedometer walking training (PWT), positive education and pedometer walking training (PEPWT), and pedometer walking (PW). Trained walking exercise was provided by a physical education expert three times per week, 45 minutes per session. Positive education was designed and led by a licensed psychologist. Six sessions of activities targeted participants' self-strength, competence and self-efficacy in walking exercise; positive relations with others; and positive emotions about life and healthy lifestyle. Of 150 participants, 60, 60 and 30 were randomly assigned to PWT, PEPWT, and PW, respectively. Demographic information, Chinese Happiness Inventory (CHI), regular walking exercise and six-minute walking distance were assessed before and after the intervention.