Aiming at the problem that small amount of data and mutation data affect the prediction accuracy of yarn neps, this paper studies and designs a yarn neps prediction model that combines gray correlation and nearest neighbor.Aiming at the problem that small amount of data and mutation data affect the prediction accuracy of yarn neps, this paper studies and designs a yarn neps prediction model that combines gray correlation and nearest neighbor.In view of the influence of small amount data and mutation data on the accuracy of yarn nep prediction, this paper studies and designs a yarn nep prediction model which combines gray correlation and nearest neighbor.