You can buy life insurance for your parents if they consent and participate in the application process. You'll be the policy owner and beneficiary, while your parents are the insured.
Buying life insurance on parents primarily covers final expenses like funeral costs and replaces lost income if you or other family members depend on their financial support. As the policy owner, you pay premiums, manage the policy and receive the death benefit. In some families, siblings split the cost. Your parents will likely need a medical exam and must provide personal details during underwriting.