This application provides a service processing method, a related apparatus, a device, and a storage medium. The method of this application includes: acquiring first biometric data in a case of displaying a first advertisement content, the first advertisement content being an advertisement content corresponding to a first item, and the first biometric data including a to-be-recognized biometric feature; obtaining, if the first biometric data is successfully matched with prestored biometric data, payment information corresponding to a target object, the prestored biometric data being biometric data acquired in advance for the target object; and executing, in response to a confirmation operation on order information for the first item, a payment operation according to the payment information. This application not only saves operation time and energy and improves order placement efficiency, but also helps to promote item sales, thereby improving an advertising value.