Colour difference always exits in all cotton fabric dyed with leuco sulphurs.The author analysed this problem in a rather concrete way and introduced the steps to avoid it in details.

• 液体硫化染料上染纯棉织物时,时常出现色光波动的问题,本文对此进行了较为具体的分析,并对如何防止此类问题的发生作了较为详细的介绍。