The present invention provides a multiaxis three-dimensional woven fabric manufacturing method and apparatus which serves to increase the density of a weave in a three dimensional woven fabric product. A three-dimensional woven fabric manufacturing method according to the present invention is characterized by including a step of forming a 4-axis yarn laminate LB of a desired thickness by using warps X, wefts Y, and a set of bias yarns B1, B2 to laminate a plurality of warp layers, a plurality of weft layers, and a plurality of layers each comprising the set of bias yarn layers, and a vertical yarn stitching step of stitching vertical yarns Z into the 4-axis yarn laminate from one surface of it in its laminating direction, and in that a three-dimensional woven fabric is formed by stitching the vertical yarn to fasten the warps X, wefts Y, and set of bias yarns B1, B2 together.