At the end of the first semester of freshman year, the school handles the related affairs of changing majors in a unified way. I have to apply. Some majors need to take exams for related majors, but it is relatively easy. Then there is the question of credits. The public course credits of freshman last semester can be recognized in your major, and the professional course credits you left behind should be made up later. As for tuition fees, it depends on whether the tuition fees of your two majors are equal.