The operation of knitting the heel of straight socks is as follows:

1. Take half the number of stitches, do not add undiminished straight knitting, and the number of rows is (the number of stitches is -2) or the length calculated according to your own experience.

2. Then divide the number of stitches into three parts, and subtract the number of stitches in the left and right third by combining stitches.

3. Combine the last 12 and 13 stitches to knit one stitch, instead of knitting this stitch, lower the stitches and knit downwards, and repeat the above steps until the number of left and right stitches is reduced by one third, and finally 14 stitches remain, and then pick the stitches on both sides. The general rule is to pick three needles and leave an empty one.