The yarn property and structure of silk/cotton blended compact yarn as well as the fiber migration and distributing rule in the yarn cross-section are discussed in this paper. The results of tests show that the hairiness of silk/cotton blended compact yarn is reduced remarkably with the yarn strength and evenness improved and the yarn being smooth and compact;the fibers in the yarn are aligned parallel with migrate towards yarn core not distinctly and silk and cotton fibers distributed irregularly in the yarn cross-section.