Abstract-Instrumental education is a very important part in colleges and universities, which has a profound influence on cultivating the ability of undergraduates, particularly the ability of combine theory with practice. In this paper, compatibility, as a key hidden element in the design of suitable materials, particularly composite materials, is explored as a professional term in instrumental education. The clear disclosure and explanations of "compatibility" to college students should be beneficial to improve students' comprehensive ability, particularly the ability of "combining theory with practice". Although only Fourier-transform infrared spectroscopy (FTIR) has been innovatively developed here, a series of other characterization methods can be similarly explored as teaching materials for cultivating students' comprehensive ability during the scientific instrumental educations processes.