The invention discloses a method for preparing an artificial bone with a three-dimensional bone-like structure and a product prepared by the method. The method comprises the following steps of: preparing a green body with a three-dimensional bone-like structure by a three-dimensional laminated assembly molding process; drying and sintering the green body to obtain a high-strength hydroxyapatite (HA) scaffold with a three-dimensional structure or a high-strength beta-tricalcium phosphate (TCP) scaffold with a three-dimensional structure; and then compounding the high-strength HA scaffold or the high-strength beta-TCP scaffold with imitation bone solution with high bioactivity to obtain a HA or beta-TCP scaffold with a three-dimensional structure which has high bioactivity and high strength, wherein the HA or beta-TCP scaffold has high bioactivity, the compressive strength is more than 5Mpa, the porosity is 70 to 75 percent, and the aperture is 100 to 600mu m. The artificial bone with the three-dimensional bone-like structure which has high bioactivity and high strength can repair various bone defects and induce the bone defects into bones.