The Canadian maple leaf card, also known as card, is abbreviated as PR Card, and is called carte de ré in French. It is an official certificate of Canadian permanent resident status and is equivalent to a green card in the United States. It is often called a "maple leaf card" to prove that an individual has a permanent resident status in Canada. Most maple leaf cards have a service life of five years, but there are special circumstances. For example, the party has failed to comply with the residence requirements abroad and has received a final ruling to cancel the permanent resident qualification. Such people can apply for a maple leaf card with a validity period of one year. Even if the Canadian maple leaf card exceeds the validity period, or if it is lost, damaged, or theft, the holder's permanent resident status will not be invalidated, but a new maple leaf card needs to be applied for again. To apply for a maple leaf card as a permanent resident, you must apply for it in Canada. If the certificate expires, you must first obtain the temporary travel documents, and then return to Canada before applying for a new card. Permanent residents who hold maple leaf cards can enjoy the majority rights and interests of Canadian citizens, and at the same time legally engage in work and education in the country, they can also choose to continue to join Canadian nationality. But he does not have the right to vote politically and cannot participate in certain highly confidential work.