To provide a low-costed durable card conveying roller capable of conveying regular cards, reducing unevenness in conveyance due to ride-over of a roller and applying a sufficient thrust pressure, and capable of conveying even if an irregular card thinner than the regular one is thrown in, and to provide a card reader-writer using the same.

In this pair of card conveying rollers for conveying cards by holding a card with a driving roller 2 and a presser roller 1 opposite to the driving roller 2, the driving roller 2 and the presser roller 1 are arranged with an interval X, and the circumferential surface of the presser roller 1 is formed with a first groove and a groove 4, which is structured of a second groove provided in the bottom of the first groove, and an elastic member 3 is fitted in the groove 4.