Because architecture (i.e., a building or a house) is too expensive and exceptional so that people have little experience of purchasing such things, if there are misleading advertisements by architectural merchants and sales agents, it is easy for the opportunity to arise for people to fall victim to buying such a building (or house). This article first attempts to discuss the general concepts, descriptions, and functions of advertisements, while also describing legislation that is responsible for misleading advertisements, while also describing legislation that is responsible for misleading advertisements. Second, its probes into real estate advertisements, focusing on the scope and the content of the advertisements, and the reasons why misleading advertisements occur. At the same time, it also analyzes and compares the legislation and responsibility in relation to misleading real estate advertisements. This is then followed by a discussion on the roles and functions of architectural merchants and sales agents in practice, besides separately inferring the different sales methods advertised, as well as how to suit the law and its responsibilities. These advertising methods should be adopted. Finally, it analyzes and compares practical cases before drawing a conclusion, and also advances proposals for the reference of the Fair Trade Commission when administering justice.