hours under the circumstance where the temperature is 30 u00b0 c and the relative humidity is 85 finally spinning the health preserved multi fibre strips into multi fibre yarn it is discovered after the experiment on 100 samplings that end breakage rate has been reduced to averagely 180 times per hour for each machine averagely when the multi fibre yarn is 12 s in fineness an experiment is conducted by firstly health preserving bast fibres by existing technology wherein said bast fibres comprise 20 jute fibres and 80 kenaf fibres in weight percentage then blending the health preserved bast fibre combination with cotton fibres into blended fibres wherein the weight proportion of the bast fibres and cotton fibres is 4 1 next opening cleaning and carding the blended fibres after that drawing the carded blended fibres into multi fibre strips and health preserving said multi fibre strips for 12 hours under the circumstance where the temperature is 70 u00b0 c and the relative humidity is 95 finally spinning the health preserved multi fibre strips into multi fibre yarn it is discovered after the experiment on 100 samplings that end breakage rate has been reduced to averagely 180 times per hour for each machine averagely when the multi fibre yarn is 12 s in fineness an experiment is conducted by firstly health preserving bast fibres by existing technology wherein said bast fibres comprise 90 jute fibres and 10 hemp fibres in weight percentage then blending the health preserved bast fibre combination with cotton fibres.