Electronic device, and message data output method of electronic device

An electronic device according to various embodiments of the present invention comprises: a display; a communication circuit; a processor electrically connected with the display and the communication circuit; and a memory electrically connected with the processor, wherein when instructions, which can be included by the memory, are executed, the processor acquires message data received through a communication circuit and confirms attribute information included in the message data and, resulting from the confirmation, the display displays first text data for a first time if the text data included in the message data is first text data inputted from a touch screen of an external electronic device, and the display displays second text data for a second time different from the first time if the text data included in the message data is second text data converted from voice data.