The present disclosure provides an access controlling method and apparatus, a device, and a storage medium. The access controlling method includes: acquiring data types of data from a device; and determining an access control policy of data of at least one data type of the data types, to control an application type of an application that accesses the data from the device; wherein the access control policy contains a correspondence relation between the data types and application types, and, for a target application type and a target data type that have the correspondence relation, an application of the target application type is configured to be permitted to access data of the target data type.