Abstract: This invention relates to a card guiding device for a card reader comprising a housing formed as one unit, a discharging opening formed on the lower surface of the housing, a pivot plate mounted rotatably to a hinge pin provided in the housing, a guide piece formed on one end of the pivot plate and positioned at one of the two guide rails formed on the housing, a torsional spring supported resiliently between an insertion slot and a curvature piece formed on the center of the pivot plate, a guide hole formed on the pivot plate and guided by a guide pin provided in the housing, thereby preventing error, malfunction and low productivity caused by assembling housing, enabling a card reader to be used immediately without repair by discharging an inserted nonstandard card, and preventing error occurrence caused by data signal loss by ensuring adequate positioning and alignment of the card.