The invention relates to a blending process of cashmere and bamboo fiber blended yarns. The blending process specifically comprises the following steps that 1, cashmere raw materials sequentially undergo the processes of cashmere mixing, cashmere combing, primary mixing, secondary mixing, combing, gilling, gill preparation, re-combing, primary needling and secondary needling, and cashmere tops areobtained; 2, bamboo fiber raw materials sequentially undergo the processes of opening picking, combing and primary drawing, and bamboo fiber tops are obtained; 3, the cashmere tops and the bamboo fiber tops are mixed, and the mixed tops sequentially undergo the processes of cotton spinning, secondary drawing, roving, spinning and spooling, and finally the cashmere / bamboo pulp fiber blended yarnsare obtained. By adopting the blending process, the properties of cashmere and bamboo fiber are optimized, and the advantages of the two types of fiber are fully played, so that the blended yarns havethe advantages of keeping warm, being soft and good in elasticity and having luster and have antibacterial, deodorizing, anti-ultraviolet, antistatic and anti-pilling functions.