OBD connector protective cover

An OBD connector protective cover 1 includes a clip 3 provided with a pair of openable/closable lugs 2, a body cover 4 that covers the entire clip 3 including the pair of lugs 2, a key cylinder 5 provided on a front of the body cover 4 as opening/closing operation means for the pair of lugs 2 and a socket 6 provided on a rear face of the body cover 4 as an opening for inserting a connection terminal section 101 of an OBD connector 100 into the body cover 4. The pair of lugs 2 are closed through a key operation with the key cylinder 5, the connection terminal section 101 of the OBD connector 100 and the body cover 4 are integrated together by the lugs 2 holding the connection terminal section 101 of the OBD connector 100, and the body cover 4 constitutes an obstacle to thereby disable access to the connection terminal section 101 from outside.