The present application discloses a method for authorizing mobile payment from a mobile application installed on a mobile device. After a user logs into a user account at the mobile application, the mobile device receives user information, and obtains payment card information retrieved from a first image of a payment card captured by the mobile device. Then, a request is sent to a server for authorizing the user to make mobile payment using the mobile application. The server is configured to authenticate the request by communicating with a financial institution using the user information and the payment card information. The mobile device receives a confirmation message after the authentication of the user information and the payment card information by the financial institution, and displays the confirmation message to the user of the mobile device such that the user can make mobile payment via the user account at the mobile application.