A wearable electronic device according to various embodiments of the disclosure includes: a housing including a first housing part in which a processor is received and a second housing part in which a display is received, and a hinge connecting the first housing part and the second housing part and having a hole provided in an area in communication with an outside of the wearable electronic device. At least part of heat generated from the processor is radiated to the outside through the hinge having the hole formed therein.