You can re-enroll after dropping out of college. Article 27 of the Measures for the Administration of Students' Status in Full-time Colleges and Universities stipulates that students who have to drop out of school for some reason, but do not meet the conditions for suspension, can keep their students' status for one year upon their own application and with the approval of the school, and can enter the school within one year. Those who fail to go through the formalities of resumption of study after the expiration of the retention period will be disqualified. Students who retain their school status do not enjoy the treatment of students and school leavers. Students who have dropped out of school due to injury must be diagnosed by hospitals at or above the county level when applying for resumption of school, and can only resume school after passing the re-examination of the school. Upon the expiration of the suspension period, students should apply to the school for resumption of study with relevant certificates before the start of the semester. After returning to school, with the approval of the school, you can take the make-up exam of the courses you studied in the original grade, and those who pass the make-up exam can study in the original grade; Otherwise, it will be included in the next grade of the original major.