The invention discloses a knitting method of knitted check tape, comprising the following steps: arranging at least more than two groups of weft yarn lengthening slide base which can slide from right to left in parallel at the top part of a rack; arranging a weft yarn lengthening rocker arm at one side of the rack; arranging a driving motor below the weft yarn lengthening rocker arm, wherein, thedriving motor is connected with the weft yarn lengthening rocker arm through a motor rocker arm in a hinging manner and the weft yarn lengthening rocker arm is connected with the weft yarn lengthening slide base; fixing a weft yarn thread tube at each weft yarn lengthening slide base respectively; arranging an elastic ribbon board below the weft yarn lengthening slide base which is arranged in the front end; leading the wefts in different colors to pass through a group of weft yarn thread tubes of the weft yarn lengthening slide base respectively in turn; and switching on the power source, wherein, a computer control system leads the weft yarns with different colors which pass through different weft yarn thread tubes to knit ceaselessly in the coordination of the warps by setting and controlling the rotation direction and rotation angle of the driving motor to realize striature or line-like tape surface with different colors, thus forming zonal knitted check tape with varied colors.