A light-emitting device of a portable communication terminal, comprising: a housing; a light-emitting element for emitting light arranged within the housing; a light guide sheet arranged within the housing for receiving and guiding the light from the light-emitting element; a light-transmitting portion provided on the housing in an integral type, for transmitting the light from one end of the light guide sheet to an outer side of the housing; a through-hole through which the light passes from the one end of the light guide sheet, the through-hole being covered with the light-transmitting portion and formed in the housing; and wherein the light-transmitting portion is integrally formed with the housing by being double injection-molded onto the housing and is configured to form an outer surface of the housing, and wherein the light-transmitting portion comprises: a light-diffusing portion for diffusing the light guided by the light guide sheet, the light-diffusing portion is integrally formed with the housing by being injection-molded onto the housing and engaged with the through hole so as to pass through at least one of inner and outer sides of the housing, and provided at a position facing the one end of the light guide sheet; and an injection-molded portion formed onto the housing and forming an outer surface of the housing, and characterized in that the light of the light-emitting element is adapted to diffuse through the light-diffusing portion. a housing; a light-emitting element for emitting light arranged within the housing; a light guide sheet arranged within the housing for receiving and guiding the light from the light-emitting element; a light-transmitting portion provided on the housing in an integral type, for transmitting the light from one end of the light guide sheet to an outer side of the housing; a through-hole through which the light passes from the one end of the light guide sheet, the through-hole being covered with the light-transmitting portion and formed in the housing; and wherein the light-transmitting portion is integrally formed with the housing by being double injection-molded onto the housing and is configured to form an outer surface of the housing, and wherein the light-transmitting portion comprises: a light-diffusing portion for diffusing the light guided by the light guide sheet, the light-diffusing portion is integrally formed with the housing by being injection-molded onto the housing and engaged with the through hole so as to pass through at least one of inner and outer sides of the housing, and provided at a position facing the one end of the light guide sheet; and an injection-molded portion formed onto the housing and forming an outer surface of the housing, and a light-diffusing portion for diffusing the light guided by the light guide sheet, the light-diffusing portion is integrally formed with the housing by being injection-molded onto the housing and engaged with the through hole so as to pass through at least one of inner and outer sides of the housing, and provided at a position facing the one end of the light guide sheet; and an injection-molded portion formed onto the housing and forming an outer surface of the housing, and characterized in that the light of the light-emitting element is adapted to diffuse through the light-diffusing portion.