Electronic device including flexible display and control method thereof

An electronic device according to various embodiments of the disclosure may include: a first housing including a first conductive portion, a second conductive portion disposed to be spaced apart from one side of the first conductive portion, and a third conductive portion disposed to be spaced apart from another side of the first conductive portion, a second housing configured to perform slide movement with respect to the first housing, a flexible display connected to the second housing and configured to be extended or contracted in response to the slide movement, a first non-conductive member comprising a non-conductive material configured to electrically separate the first conductive portion and the second conductive portion from each other, a circuit board disposed inside the first housing and including a circuit disposed thereon, a fixing member comprising a conductive material configured to fix the circuit board to the first housing, and a switch disposed adjacent to the fixing member and configured to electrically connect or disconnect the circuit to or from at least a portion of the first housing.