Abstract: For solving the problems of conventional low twist yarns due to their low tenacity,a specially designed false twister was installed between the front rollers and yarn guide on a conventional ring spinning frame for increasing fiber migration and entanglement in the spinning triangle,leading to a reinforcement of yarn strength.Thus the produced yarn has a low twist and a relatively high strength simultaneously.In addition,the yarn internal and external structures were examined and the radial fiber distribution,fiber path and yarn surface structure between the modified,normal and low twist conventional ring yarns were compared.The results reveal that the modified low twist yarn has a structure different from the conventional ring spun yarns.