The issue of marketing development is always critical and explored for the private industries. With rising social consciousness and advanced technology, the public welfare will become a critical issue that related to the development of society and economy. Not only the interaction between individuals, but also the active interaction between organizations can be expected. With the consideration of maximizing social welfare, the marketing idea will be greatly employed in public sectors and nonprofit organizations for acquiring more support and trusts of people. In the time of democracy, the issue of how the police personnel uses marketing strategy to get rid of the distance with people and make them supportive for policy practice and law enforcement is very important. This study attempts to create an optimal model for police marketing strategy through the exploration of relevant literatures with the theories for industrial marketing and the points of view for public-sector marketing.