Due to falling birth rates and a longer average life expectancy, the demand intention of aging in place among middle-aged (40-64) people is an important issue. Therefore, the theory of planned behavior and health belief model were integrated for applieduse in the present study to explain middle-aged people’ behavior intentions and antecedents to adopt LOHAS aging in place. A field survey was conducted in Taiwan to collect data from citizens between the ages of 40 and 64 years. A structural equation model was used to examine the data. The resulting 223 valid questionnaires constituted a response rate of 89.2%. The research results indicate that attitude (β=0.289; p<0.01), self-efficacy(β=0.117; p<0.05), perceived susceptibility(β=-0.095; p<0.05), perceived benefit(β=0.236; p<0.01), perceived barriers(β=-0.122; p<0.05), and cues to action(β=0.186; p<0.05) have significantly influence on behavior intention while explaining 57% of the total variance in behavior intention. Thus, the results of this study provide useful insights that can not only help Mministry of the Iinterior choose an appropriate promotion strategy but also enables long-term managers and related- government agencies units to develop and appropriate their own administrative strategies for the future to better attract middle-aged people’ more intentions to adopt aging in place.