A mobile terminal, comprising: a screen; a back cover, covered by the screen; a slidable assembly, wherein the slidable assembly comprises: a slider, retractable and slidable relative to the back cover in a direction parallel to the screen, and switchable between a retraction state in which the slider is covered by the screen and an extension state in which the slider is exposed out of the screen; at least one functional component, fixed to the slider; and a first cover, slidably coupled to the slider with a sliding direction being perpendicular to the screen, covering the at least one functional component, and slidable along with the slider such that the first cover is covered by the screen or exposed out of the screen; wherein when the first cover is exposed out of the screen, the first cover slides to be flush with the screen; and a driving mechanism, fixed between the screen and the back cover, and configured to drive the slider to slide; characterized in that, the back cover comprises a middle frame fixedly connected to the screen; the middle frame comprises a pair of first arms opposite to each other, each of the pair of first arms defines a sliding groove extending along a lengthwise direction of the pair of first arms; the slider comprises a first outer frame, and the first outer frame is slidable relative to the sliding groove; the at least one functional component is fixed in a space defined by the first outer frame and the middle frame. a screen; a back cover, covered by the screen; a slidable assembly, wherein the slidable assembly comprises: a slider, retractable and slidable relative to the back cover in a direction parallel to the screen, and switchable between a retraction state in which the slider is covered by the screen and an extension state in which the slider is exposed out of the screen; at least one functional component, fixed to the slider; and a first cover, slidably coupled to the slider with a sliding direction being perpendicular to the screen, covering the at least one functional component, and slidable along with the slider such that the first cover is covered by the screen or exposed out of the screen; wherein when the first cover is exposed out of the screen, the first cover slides to be flush with the screen; and a slider, retractable and slidable relative to the back cover in a direction parallel to the screen, and switchable between a retraction state in which the slider is covered by the screen and an extension state in which the slider is exposed out of the screen; at least one functional component, fixed to the slider; and a first cover, slidably coupled to the slider with a sliding direction being perpendicular to the screen, covering the at least one functional component, and slidable along with the slider such that the first cover is covered by the screen or exposed out of the screen; wherein when the first cover is exposed out of the screen, the first cover slides to be flush with the screen; and a driving mechanism, fixed between the screen and the back cover, and configured to drive the slider to slide; characterized in that, the back cover comprises a middle frame fixedly connected to the screen; the middle frame comprises a pair of first arms opposite to each other, each of the pair of first arms defines a sliding groove extending along a lengthwise direction of the pair of first arms; the slider comprises a first outer frame, and the first outer frame is slidable relative to the sliding groove; the at least one functional component is fixed in a space defined by the first outer frame and the middle frame.