A circular knitting machine for knitting stripe patterns by changing at least two knitting yarns, the circular knitting machine comprising: a first yarn feed changer established in a first feeder and having a plurality of yarn feed fingers that can be selectively moved; a second yarn feed changer established in a second feeder and having a plurality of yarn feed fingers that can be selectively moved; a yarn carrier that is established opposite the second feeder and can feed a yarn to a knitting needle; a trapper that is designed to move in the circumferential direction along with the rotation of the knitting machine and to catch a yarn provided by the first yarn feed changer or the second yarn changer and feed the yarn to a knitting needle at the second feeder via the yarn carrier; and yarn cutters (14-1, 14-2) and yarn catchers for retaining and cutting an old knitting yarn that ceases to be fed after a new knitting yarn from the first yarn feed changer or the second yarn feed changer is fed to a knitting needle of the second feeder and formed into a loop; wherein the yarn cutters (14-1, 14-2) and the yarn catchers are designed to operate in such a way that a yarn fed from either of the first yarn feed changer or the second yarn feed changer, as it ceases to be fed and becomes an old yarn after a new knitting yarn from the first or second yarn feed changer (40-1, 40-2) is fed to a knitting needle at the second feeder; is retained and cut at approximately the same position; characterized in that the circular knitting machine comprises a yarn guide established between the first yarn feed changer and the second yarn feed changer, wherein the yarn guide is a plate provided with an indentation and a protrusion on the side facing the outside of the knitting machine, wherein the indentation and protrusion includes a guide plane made up of an upward slope and an elevated part, and a retaining part which is an indentation provided above said guide plane, wherein the yarn guide is arranged such that as the trapper moves, a new knitting yarn from the first yarn feed changer can be caught by the trapper and rises along the upward slope of the guide plane until the yarn reaches the retaining part, the retaining part stably retaining the angle at which the yarn enters the yarn carrier. a first yarn feed changer established in a first feeder and having a plurality of yarn feed fingers that can be selectively moved; a second yarn feed changer established in a second feeder and having a plurality of yarn feed fingers that can be selectively moved; a yarn carrier that is established opposite the second feeder and can feed a yarn to a knitting needle; a trapper that is designed to move in the circumferential direction along with the rotation of the knitting machine and to catch a yarn provided by the first yarn feed changer or the second yarn changer and feed the yarn to a knitting needle at the second feeder via the yarn carrier; and yarn cutters (14-1, 14-2) and yarn catchers for retaining and cutting an old knitting yarn that ceases to be fed after a new knitting yarn from the first yarn feed changer or the second yarn feed changer is fed to a knitting needle of the second feeder and formed into a loop; wherein the yarn cutters (14-1, 14-2) and the yarn catchers are designed to operate in such a way that a yarn fed from either of the first yarn feed changer or the second yarn feed changer, as it ceases to be fed and becomes an old yarn after a new knitting yarn from the first or second yarn feed changer (40-1, 40-2) is fed to a knitting needle at the second feeder; is retained and cut at approximately the same position;