How to urge re-application after Canadian student visa is rejected?

There is a processing time for student visas, which is posted on the website of the Immigration Bureau. If it is within a reasonable processing time, try not to rush to get a visa. First, you won't get a reply, but you may refuse the visa.

If your visa processing time has exceeded the time announced by the embassy, you can write an email to the embassy or call the visa center. Basically, these two methods, but generally will not get a reply, the embassy will still try the case at the original speed.

For example, if you have a history of refusing visas, I suggest that you don't rush to do it, so as not to cause bad results. Wait patiently.