A card connector includes a shell having an entrance formed at a front end thereof, at least one terminal set, a card tray having a lateral portion, an ejecting assembly composed of a heart-shaped guide groove formed at the lateral portion, a guide member having two ends, one of which is pivoted to the shell and the other has an interference portion for interference with the guide groove, and a springy member mounted inside the shell and working on the card tray; and a springy biasing member mounted to shell and applying the resilience to the guide groove. The lateral portion includes an extension groove having two ends, one of which communicates with the guide groove and the other extends rearward to be an open end. When the card tray is inserted into the shell through the entrance, the open end allows the interference portion to enter the extension groove.