In an IC card connector device capable of holding a push rod at a push position while an IC card is connected, a heart-shaped cam groove 10 capable of holding a push rod 4 at two positions (a push position and a projecting position) in association with a transmission pin 12 is formed on the outside surface of a frame 3 having a guide groove 3a for inserting and withdrawing an IC card 1 which is formed on the inside surface thereof and a lock lever 16 is held to a knob 4a at the extreme end of the push rod 4 to thereby lock the push rod 4 at the push position by the lock lever 16 while the IC card 1 is connected. When the IC card 1 is to be discharged, the lock of the push rod 4 is released by actuating the lock lever 16 and thereafter the knob 4a is pressed to thereby move the push rod 4 from the push position to the projecting position. Then, an eject arm 5 is turned by pressing a drive plate 15 by the transmission pin 12 in the process that the push rod 4 is moved again from the projecting position to the push position to thereby discharge the IC card 1. With this arrangement, the discharge of the IC card against the operator's intention which has connected can be prohibited and the size of an eject mechanism can be reduced.