Abstract: Flexible composite is often stretched in many directions and are kept on using when they have a little crack. The analysis of tensile and precracked tearing properties of biaxial warp knitted flexible coposite under biaxial loads could be good theoretocal reference for assessing and predicting the property of composite. In this paper, finite element analysis method was used to simulate the stress-strain curves for tensile and precracked tearing test of biaxial warp knitted fabrics flexible composite under biaxial tensile loads. The tensile and precracked tearing behaviour of models, in particular the streee-strain curves for three different loads ratios are simulated. The results show that there is a good match on the stress-strain curves between the experimental and finite prediction tensile and precracked tearing of biaxial warp knitted flexible composite under biaxial tensile loads. Theoretical results show that not only the stress-strain curve for tensile and precracked tearing of biaxial warp knitted flexible composite under 1:1 load ratios could be simulated but also the stress-strain curve under other arbitrarily load ratios which can not be tested now could be simulated.