Abstract: The paper studied some flax flat knitted fabrics developed on the STOLL computer′s flat-knitting machine.It was found that the flax flat-knittability could be improved by some effective methods,including maintaining moisture,using two-ply flax yarns,pre-processing and designing rational knitting parameters.The(fabric′s) structure,weight,thickness and tensile properties of the samples were tested and analyzed statistically.The findings revealed that when the flax milano rib of NP=10.5,the fabric has better tensile properties and lower cost.It can be used as the preform of eco-friendly textile composites of better energy absorption.