An electronic device is provided. The electronic device includes a flexible display including a first area disposed to be visible to the outside and a second area extending from the first area and disposed to be accommodated inside the electronic device in a first state and to be at least partially visible to the outside in a second state, a bendable member disposed on the rear surface of the flexible display and configured to support the flexible display in the first state and the second state, a case configured to support at least a portion of the flexible display, a sliding frame slidably coupled to the case and including a slide plate having a plurality of first guide slits formed therein and a sliding bar extending from the slide plate and coming into contact with the bendable member in the second state, and a plurality of driving bodies configured to enable sliding movement of the flexible display while switching from the first state to the second state.