Optical cable connection module for preventing shutter leaving

The invention refers to an optical cable connection module for preventing shutter leaving, comprising a main body with built-in optical elements including a cable inserting port allowing a cable to insert into a slot of an opening portion from the outside, and an inserting slot located on an upper part of the cable inserting port; a shielding plate including a rotating shaft with a shape projection corresponding with the inserting slot and located in the inserting slot, and an opening portion located at an inlet of a cable, closing the cable inserting port according to the rotation of the rotating shaft and located in the main body; and an elastic sheet combined in the main body and including an elastic portion used for supporting the shielding plate in the main body. Accordingly, a rotary portion of the shielding plate is located in the inserting slot of the main body; in addition, the projection formed in the rotary portion prevents movement of the rotary portion in the inserting slot, and prevents the shielding plate from separating from the cable inserting port. Accordingly, the optical cable connection module can prevent foreign matters from entering the cable inserting port, and reduce photo-communication light loss of the cable introduced into the cable inserting port.