Abstract: This paper primarily explores how the elastic regulation of cotton/spandex yarn affects the dimensional stability of bi-stretch fabric. The findings indicate that when the warp yarn is regulated at 90°C with a heating rate of 3 °C/min for 30 minutes, and the weft yarn at 110 °C with a heating rate of 1 °C/min for 30 minutes, the resulting bi-stretch Oxford fabric retains warp and weft shrinkage rates within −3%, density deviation rates within −5% to ＋5%, an elastic elongation rate (under a specified force for 30 minutes) of at least 12%, and a residual elongation rate (after a fixed length for 30 minutes) of no more than 7%, demonstrating excellent dimensional stability.

Key words: cotton/spandex; elasticity regulation; bi-stretch; water shrinkage; elastic elongation