In order to improve the teaching quality of packaging engineering specialty, the disciplinary connotation and features of this specialty are sought, its education connotation and future development are analyzed and evaluated, and its disciplinary position and teaching contents are set up by utilizing the theory and method of cross science. At the same time the disciplinary crossing situation of packaging engineering course systems can be reviewed quantitatively by applying the disciplinary cross-correlation formulae introduced from this research. It is also pointed out that packaging education departments must carry out teaching reform-creation and construct a new-type of interdisciplinary education system model because the packaging and other industries need compound talented persons. The education reform direction of the packaging engineering specialty is to construct a new type of interdisciplinary education system model.