The invention discloses a double axial warp knitting machine, which comprises a warp inserting mechanism, a weft inserting mechanism, a knitting mechanism, a drawing and winding mechanism, at least two fiber chopping machines capable of cutting fibers by required length, at least one fabric conveying mechanism arranged between adjacent fiber chopping machines and a conveying mechanism arranged below the fiber chopping machines and the fabric conveying mechanism. Each fiber chopping machine comprises a machine frame, a knife roll, a rubber roll and a fiber throwing roll, wherein the knife roll is provided with a plurality of cutting blades which are distributed in a radial direction and have an axial vertical plate shape; the fiber throwing roll is provided with a plurality of short shafts which are distributed along a radial direction and are arranged along an axial direction at intervals; the cutting blades on the knife roll is matched with the rubber roll; and the fiber throwing roll is arranged below the knife roll and the rubber roll. The fabric conveying mechanism comprises a driving roll and a driven roll. The conveying mechanism comprises an annular closed conveying belt, a driving conveying roll and a driven conveying roll. The fabrics produced by the warp knitting machine of the invention have high service performance, can well meet actual service requirements and have wide application range.