A display control method, applied to an electronic device configured with a foldable display, wherein the method comprises: displaying, by the electronic device, a first interface (630, 730) in full screen by using the foldable display; receiving, by the electronic device, a first folding operation for the foldable display, wherein a display area of the foldable display is divided into a primary display, a secondary display, and a side display; and in response to the first folding operation, displaying, by the electronic device, a second interface (610, 710) on the primary display or the secondary display of the foldable display, and displaying a beautified layer (620, 720) on the side display of the foldable display, wherein a pattern is displayed at the beautified layer (620, 720), and interface content of the second interface (610, 710) is the same as interface content of the first interface (630, 730), wherein the method further comprises: receiving, by the electronic device, a second unfolding operation for the foldable display; and, in response to the second unfolding operation, extending, by the electronic device within a second time period, the second interface to the first interface that is displayed on the foldable display in full screen, and sliding, by the electronic device within a first time period, the beautified layer out of the display area of the foldable display along a direction perpendicular to a direction in which the second interface is extended, wherein, in response to the second unfolding operation, progressive exit of the beautified layer displayed in the bent area is implemented, and continuous change of the second interface from primary-display display to full-screen display is also implemented so that the beautified layer of the side display slides in a direction from a top to a bottom of the side display and synchronously the second interface also extends along the direction in which the secondary display is located. displaying, by the electronic device, a first interface (630, 730) in full screen by using the foldable display; receiving, by the electronic device, a first folding operation for the foldable display, wherein a display area of the foldable display is divided into a primary display, a secondary display, and a side display; and in response to the first folding operation, displaying, by the electronic device, a second interface (610, 710) on the primary display or the secondary display of the foldable display, and displaying a beautified layer (620, 720) on the side display of the foldable display, wherein a pattern is displayed at the beautified layer (620, 720), and interface content of the second interface (610, 710) is the same as interface content of the first interface (630, 730), wherein the method further comprises: receiving, by the electronic device, a second unfolding operation for the foldable display; and, in response to the second unfolding operation, extending, by the electronic device within a second time period, the second interface to the first interface that is displayed on the foldable display in full screen, and sliding, by the electronic device within a first time period, the beautified layer out of the display area of the foldable display along a direction perpendicular to a direction in which the second interface is extended, wherein, in response to the second unfolding operation, progressive exit of the beautified layer displayed in the bent area is implemented, and continuous change of the second interface from primary-display display to full-screen display is also implemented so that the beautified layer of the side display slides in a direction from a top to a bottom of the side display and synchronously the second interface also extends along the direction in which the secondary display is located. receiving, by the electronic device, a second unfolding operation for the foldable display; and, in response to the second unfolding operation, extending, by the electronic device within a second time period, the second interface to the first interface that is displayed on the foldable display in full screen, and sliding, by the electronic device within a first time period, the beautified layer out of the display area of the foldable display along a direction perpendicular to a direction in which the second interface is extended, wherein, in response to the second unfolding operation, progressive exit of the beautified layer displayed in the bent area is implemented, and continuous change of the second interface from primary-display display to full-screen display is also implemented so that the beautified layer of the side display slides in a direction from a top to a bottom of the side display and synchronously the second interface also extends along the direction in which the secondary display is located.