What should I do if my Canadian student visa is rejected three times and I reapply?

In fact, it's not so terrible that a Canadian student visa is rejected three times. Whether you can sign the bill again after being refused depends on whether your binding force is stronger than last time. If the binding force is more than last time, you can sign it again at any time.

If you don't change anything, that is, the binding force remains the same as last time, even if you sign in 10, the result will still be rejected, so when you can sign again after being rejected has nothing to do with the time, mainly depending on whether your binding force has increased compared with last time. As long as you add it, you can sign it again right away.

Refusal only means that your binding force can't reach the historical stage required by the embassy. Just like we got a perfect score of 100, and TOEFL passed 60. The last time you refused the visa, your binding force didn't reach the minimum passing line of 60 in the embassy, so we should try our best to improve our binding force and improve our binding force score.