Disclosed is an electronic device comprising: a sensor configured to measure a temperature of the electronic device; a flexible display wherein an area of the flexible display visible to the outside can be changed; a memory storing executable instructions; and at least one processor, comprising processing circuitry configured to access the memory and execute the instructions, wherein at least one processor, individually and/or collectively, is configured to: identify a first input for changing the size of the visible area of the flexible display, identify the temperature of the electronic device via the sensor based on the identification of the first input, and identify change conditions of the size of the flexible display based on the identified temperature.