先看这三条

provide a minimum of $100,000 emergency coverage per applicant

be valid for a minimum of 1 year from the date of entry … be valid for each entry to Canada, and be available for review by the border services officer on request

cover the applicant(s) for health care, hospitalization and repatriation

be paid in full or in installments with a deposit (quotes are not accepted)

a Canadian insurance company, or an insurance company outside Canada that is authorized by the Office of the Superintendent of Financial Institutions (OSFI) under the Insurance Companies Act to provide accident and sickness insurance

include the insurance company name that issued the policy (sometimes known as "the insurer" or "the underwriter") … Insurance brokers and insurance claims administrators are not insurance companies and will not appear on the OSFI list.

All policies that are issued by a foreign insurance company must include a statement that the document was issued or made while the company was doing insurance business in Canada.

If your health insurance will expire before you leave Canada, you should renew your policy to maintain coverage during your stay.