Under normal circumstances, college graduates can no longer take the college entrance examination. College entrance examination is an entrance examination for general higher education enrollment, mainly for high school graduates. Once a student obtains a university degree, he or she has completed the stage of higher education, so he or she no longer meets the requirements for taking the college entrance examination.

However, the specific provisions may vary from country to country. In some cases, there may be some exceptions or special policies that allow students who have obtained university degrees to re-take the college entrance examination, but this is usually rare.

If you need to pursue further studies or change majors, college graduates can usually enter the postgraduate stage through other channels or make further academic plans, such as self-enrollment, postgraduate entrance examination, and changing majors. The specific regulations and requirements should be determined according to the education policy of the country or region. It is recommended to consult the relevant education departments or college admissions offices to obtain accurate information.