A display apparatus including a cover, a slide rail component and a flexible display component is provided. The slide rail component is disposed under the cover. The slide rail component includes a first rail, at least one first elastic element, at least one first bump and a first sliding block. The first rail has at least one recess. The first elastic element and the first bump are disposed in the first recess. The first bump is disposed between the cover and the first elastic element. The flexible display component has a first edge. A portion of the first edge is fixed to the first sliding block and disposed between the cover and the first sliding block. A display apparatus including a flexible display component, a support component and a guide roller is also provided.