If you want to keep studying
You need to extend your study permit. To extend your study permit, you need to know:
When to apply :- Apply for a study permit extension at least 30 days before your study permit expires, if you want to keep studying in Canada.
What to do if your permit expired :- If your study permit expires and you want to stay in Canada and study, you’ll need to apply
What happens if you travel outside Canada :- Including documents you need to re-enter Canada