The teaching of college professional courses is not only a process of imparting professional knowledge, but also an important part of accompanying students towards excellent engineers. The ultimate goal of teaching of engineering professional courses is the learning effect of students. Based on the teaching practice of specialized courses, the existing problems in teaching are analyzed by investigating teaching effect. Through the reform of classroom teaching content, engineering practical ability and scientific research literacy training, the interest of students in learning professional knowledge is stimulated, their knowledge structure is improved, the talent training quality is enhanced, and efforts are made to train senior engineers and technicians meeting the social needs of the new era.