Taking the experiment of Air Pollution Control Engineering as the carrier, the in-depth research on the "two skins" problem commonly existing in the ideological and political construction of engineering experiment courses is conducted. Through the reform of the experimental teaching content and teaching methods, the breakthrough point is deeply excavated, and the ideological and political elements are imperceptibly integrated into experimental teaching, and the path of ideological and political practice in experimental courses is explored. Through practice, the ideological and political education of the course has achieved the expected results, that is the realization of the educational goal of integrating values shaping, knowledge imparting and ability training, which has provided ideas and methods for the ideological and political reform of practical courses for engineering majors.