With the progress of time and technology, consumer purchase habits change. Modern marketing concept focuses on commodity-orientedness and customer-orientedness, and the pursuit of profit maximization of enterprises. Because telemarketing is characterized by rapid transactions, two-way communication, boost in turnover rate etc., telemarketing has become an important financial tool for direct marketing. The study reviews the history of telephone marketing in Taiwan, discusses legal issues and restrictions telemarketing salepersons are currently facing, and through in-depth interviews with telemarketing employees. It also integrates experts’ experience and the author’s observations to propose the concepts telemarketing employees should have and the key factors to their success.