hello sir,
i just want to know that if i get work permit from canada and when i check this work permit through canada high commission or they said this is fake work permit
so it happen may be the record of work permit is not feed her computer
so i mean may be it can happen

There is plenty of fraud related to work permits going on. Some fraudsters will fabricate government approvals that are clearly not genuine, and unfortunately there are those willing to pay for this.

If the High Commission said it is fake, then the likelihood that it is genuine is extremely low.