Abstract: Physicochemical refining process for jute fibers was presented.With the aim to improve the spinnability of the jute fiber,the effects on mechanical properties of jute fibers in varying processes,parameters,and refining steps were analyzed and discussed.By analyzing the average length,linear density,and breaking strength of jute fibers obtained by different processes,the results show that hackling process has great effect on the average length,linear density,and breaking strength of jute fibers and is a key controlling factor in the physical refining;jute fibers with the fineness of 16.65 tex and length of 30.16 mm that are obtained through pretreatment—long fiber drawing/cutting—hackling are suitable for cotton spinning system.