An instant assembly-type optical connector is provided to enable a user to assembly the optical connector in a field by forming a main line coupling member using a transparent material. An instant assembly-type optical connector includes a housing(100), to which a plug(200) is inserted. A main line coupling member(300) is coupled with the plug using a fixing cap(400). The main line coupling member is elastically supported on the fixing cap using a spring(500). A ferrule(30) is fixedly coupled with an end portion of the main line coupling member. A fixing member(600) is detachably pressed into a free end of the main line coupling member. The fixing member is arranged to be detachably coupled with the fixing cap and sealed by a protective cover(700).
