[Problem to be solved] There is provided a knit design method and a knit design apparatus which make it possible to easily append extra knitting and prevent a pattern from collapsing in a state where the extra knitting is appended.

[Solution] In Fig. 1(a), a specified area 2 to which a purl knitting is applied is set to have a constant knitting width of ten stitches from an end, for example, on a knitting stitch image 1. In Fig. 1(b), a start position 4f is set and the specified area 2 is slid in a course direction so as to be deformed to a target area 2a having a simple shape. In Fig. 1(c), a pattern 4 is developed from the start position 4f on the target area 2b to which extra knitting 5 have been appended based on the difference between the length 1c of the outer edge 1a and the length ld in the wale direction such that distortion generated due to the difference is decreased. The target area 2b on which the pattern 4 has been developed is returned so as to be connected to the base area 3, so that the pattern 4 such as a purl pattern can be prevented from collapsing.