A rotation transmission member is composed of a shaft-like metal insert member having a first gear section on the external surface thereof and a resin gear resin-molded on the external surface of one end of the metal insert member and having a second gear section on the external surface thereof. The first gear section is formed almost over the entire length of the metal insert member and provides one end thereof as an insert portion on which the resin gear is to be resin-molded. Thus, it becomes unnecessary to provide a joint portion (the insert portion) between the metal insert member and the resin gear with the machining of any particular shape for preventing the coming-off therebetween.