A knitting system capable of obtaining a fabric having a desired texture using an elastic yarn. A knitting controller (20) controls a carriage (5), and the like, according to knitting data and control data stored in a memory (21). Data representing the correspondence between a gauge texture and a stitch loop length being obtained after kitting and the correspondence between these gauge texture and stitch loop length and the length and tension of the elastic yarn (2) being fed at the time of knitting are collected previously and stored in the memory (21) in the form of table data. With reference to the table data stored in the memory (21), the knitting controller (20) sets control target values of the length and tension of the elastic yarn (2) for a yarn feed controller (23) such that a gauge texture and a stitch loop length being specified by an input unit (22) can be attained.