Abstract: A resource scaling method for dynamically allocating resources to an application deployed on a cloud platform. The method includes predicting, at a first moment according to a prediction policy, a service indicator of a service that is at a second moment later than the first moment, to obtain a predicted service indicator, determining, according to the predicted service indicator and a mapping relationship between a service indicator and a resource amount required by the application, a resource amount required by the application at the second moment, and adjusting, before the second moment arrives, a resource amount of the application to the determined resource amount.