The present invention relates to a portable terminal case having a skin condition-measuring function. An aspect of the present invention may provide a portable terminal case having a skin condition-measuring function, comprising: a battery case having a battery therein and attached to the rear surface of a portable terminal; a bumper case coupled to the battery case and surrounding the edges of the portable terminal; a moisture measurement unit for receiving the content of moisture in the skin of a user from a moisture measurement sensor which is provided on the front surface of the bumper case and comes in contact with the skin; a contact detection unit for receiving information on the presence or absence of a contact between the bumper case and the skin from a contact detection sensor for detecting the presence or absence of the contact; an environment measurement unit for receiving surrounding environment information from an environment information measurement sensor for collecting the environment information; and a control unit for collecting the moisture content and the environment information from the moisture measurement unit and the environment measurement unit according to the detection result of the contact detection unit.