Parameters influencing the evenness of the woollen cashmere yam were analyzed, and fifty batches of yams with fineness of 38.5 tex were used to study the quality control parameters in relation to the evenness.Through statistical analysis, the models of yam evenness were built.Moreover, the relationship between the evenness of spinning yam and roving yarn was also investigated.The results showed that a positive correlation existed between them, and the amount of thin place per kilometer was the most important factor which could influence the evenness of woollen cashmere yarn.The influence of the amount of neps and thick place on the yarn evenness was indistinctive.The conclusions obtained would be helpful to improve the precontrol ability on yam evenness.