PROBLEM TO BE SOLVED: To suppress occurrence of structural defects and to improve the material strength.SOLUTION: A method for processing magnesium alloy implants includes: an extrusion step S1 in which a plastically deformed magnesium alloy molding material is obtained by extruding magnesium alloy a cutting step S2 in which the magnesium alloy molding material obtained in the extrusion step S1 is cut at an angle of 70°-110° with respect to the extrusion direction a compression step S3 in which a compressing force in a direction perpendicular to the extrusion direction is applied to a massive magnesium alloy material obtained in the cutting step S2.