The admission ticket of junior high school graduates was collected by the high school where they were admitted. Normally, the admission ticket is one of the important documents for high school admission. If you really can’t find your admission ticket, you can consider using your diploma as a supplementary certificate. However, whether a diploma can be used instead of an admission ticket needs to be determined according to the specific requirements and regulations of the high school. It is recommended to contact the admitted high school to find out whether they accept the diploma as an alternative credential and prepare the appropriate materials according to their requirements.