A connector structure which can realize height reduction of connecting portions and space saving and which prevents separation of a female connector and a male connector from each other due to an impact or vibrations, wherein a conduction structure is formed by bringing connecting pins (9) of a male connector (B2), which are inserted in female terminal portions installed in a flexible circuit board (B3) of a female connector (B1), into pressure contact with pad portions of the female terminal portions (3), and the female connector (B1) and the male connector (B2) are coupled with each other by inserting column-shaped projections (15) of the male connector (B2) into notch ring bodies (14) fixed on the flexible circuit board (B3) of the female connector (B1) and holding the column-shaped projections (15) by restoring force based on elastic deformation of the notch ring bodies (14).