Abstract: In this work,PP filaments were wrapped in the flax surface to form PP /flax covered yarn． The covered yarns were used to weave three typical 2． 5D woven fabrics(deep crossing linking,straight shallow-crossing linking and the curved one)． Then those woven fabrics were made into PP / flax composites which can be used as car interior by hot pressing． Tensile property was tested by using Instron universal material testing instrument and the damage mechanism was analyzed in the paper． The results showed that warp direction tensile property of deep crossing linking woven fabrics turned out to be best,and those of curved ones were worst． The weft direction tensile property of the three 2．5D woven fabrics just differed little． Warp direction tensile property of straight shallow-crossing linking composites were best,while the deep crossing linking ones were worst． The weft direction tensile property of the three 2．5D woven composites just differed little．

Key words: 2.5D woven composites, curved shallow-crossing linking, straight shallow-crossing, deep crossing linking, covered yarns, PP, flax