A structure for preventing a connector from being detached from an electronic component of a vehicle is provided. The structure includes a fixing clip member fixing the connector to a connector inserting groove. The fixing clip member includes a first stopper acting as a hanging jaw so that the fixing clip member is not detached from the connector inserting groove in a state which is mounted in a mounting groove formed in the connector inserting groove, in a process of inserting the fixing clip member to be inserted into the connector inserting groove and a second stopper mounted in a stopper hanging groove formed in a front end portion of the connector to act as a hanging jaw fixing the connector so that the connector is not detached from the connector inserting groove, in a process of inserting the connector into the connector inserting groove.