The objectives of this research were 1) to investigate the relationship between tourism public relations, travel motivation, tourism image and perception of public policy and the decision making towards traveling to secondary cities in the central region of Thailand; 2) to examine the role of travel motivation, tourism image and perception of public policy as mediating roles among tourism public relations and the decision making towards traveling to secondary cities in the central region of Thailand; and 3) to test the relationship model between variables influencing with the decision making towards traveling to secondary cities in central region of Thailand by comparing them with empirical data.