更正2楼说的，大学的学生许可，换大学不用更换学生许可。
I want to change my school or program of study. How can I change my study permit?
http://www.cic.gc.ca/english/helpcentre/answer.asp?q=487&t=15
Post-secondary student
You may change your school, program and/or field of study without applying for a new study permit. You do not need to apply for a change to the condition of your study permit, either. You may continue to use your study permit as long as it is valid.
If you are changing your level of study (e.g., bachelor’s to master’s), you do not need to apply for a change to the condition of your study permit, either.
