 The study found that the tensile, three-point bending and morphological properties of flax-epixibio-composite fibres with different fiber ratios were characterized, and the interfacial binding of fractured composite samples was examined by scanning electron microscopy. The results showed that biosodium carbonate treatment enhanced the mechanical and morphological properties of the biocomposites. A one-way and over-using Minitab software was performed on the experimental results. This article was offered by Salah Amroun, Ahmed Bailodi, Ramazan Dalmiss, and others.