http://www.cic.gc.ca/english/immigrate/sponsor/index.asp
Citizenship and Immigration Canada (CIC) knows it is important to help families who come from other countries to reunite in Canada. If you are a Canadian citizen or a permanent resident of Canada, you can sponsor your spouse, common-law partner, conjugal partner, dependent child (including adopted child) or other eligible relative to become a permanent resident.
CIC refers to the immigrants who are eligible to use this family sponsoring process as the Family Class.
If you become a permanent resident, you can live, study and work in Canada.
When you arrive in Canada as a permanent resident, you must make every reasonable effort to provide for your own essential needs and those of your family.
If you sponsor a relative to come to Canada as a permanent resident, you are responsible for supporting your relative financially when he or she arrives. As a sponsor, you must make sure your spouse or relative does not need to seek financial assistance from the government.
The process to sponsor your family begins when you, as a citizen or permanent resident in Canada, apply to be a sponsor.
There are two different processes for sponsoring your family. One process is used for sponsoring your spouse, conjugal or common-law partner and/or dependent children. Another process is used to sponsor other eligible relatives.