Cassette transferring apparatus and cassette transferring system having thereof

A cassette transfer apparatus and a cassette transfer system having the same are disclosed. The cassette transfer apparatus according to an embodiment of the present invention includes: a transfer main body which is transferred along a drive rail; a pair of first transfer roller units which are arranged in the upper part of the transfer main body, move corresponding to the size of a cassette on which a substrate is mounted, and support the lower both sides of the cassette. The pair of the first transfer roller units are arranged to be symmetric in the upper part of the transfer main body in order to reciprocate in the direction of the central part of the transfer main body in one side of the transfer main body.