A verification method of an osteotomy guide tool , comprising: obtaining a pose parameter of a feature portion of an osteotomy guide tool in a coordinate system of a tool target ; and comparing the obtained pose parameter of the feature portion of the osteotomy guide tool with a corresponding standard value to obtain an offset between the pose parameter of the feature portion of the osteotomy guide tool and the standard value; wherein if the offset is greater than an expected value, the osteotomy guide tool is determined as deformed, characterized in that : the feature portion comprises a geometric center point of an osteotomy guide block of the osteotomy guide tool , and wherein the step of obtaining a pose parameter of a feature portion of an osteotomy guide tool in a coordinate system of a tool target comprises: obtaining a plurality of pose parameters of a plurality of surfaces of the osteotomy guide block of the osteotomy guide tool in the coordinate system of the tool target ; calculating an intermediate plane between every two opposite surfaces of the plurality surfaces according to the plurality of pose parameters of the plurality of surfaces; and determining an intersection point defined by the intersecting intermediate planes as the geometric center point of the osteotomy guide block , and calculating a pose parameter of the geometric center point of the osteotomy guide block in the coordinate system of the tool target . obtaining a pose parameter of a feature portion of an osteotomy guide tool in a coordinate system of a tool target ; and comparing the obtained pose parameter of the feature portion of the osteotomy guide tool with a corresponding standard value to obtain an offset between the pose parameter of the feature portion of the osteotomy guide tool and the standard value; wherein if the offset is greater than an expected value, the osteotomy guide tool is determined as deformed, characterized in that : the feature portion comprises a geometric center point of an osteotomy guide block of the osteotomy guide tool , and wherein the step of obtaining a pose parameter of a feature portion of an osteotomy guide tool in a coordinate system of a tool target comprises: obtaining a plurality of pose parameters of a plurality of surfaces of the osteotomy guide block of the osteotomy guide tool in the coordinate system of the tool target ; calculating an intermediate plane between every two opposite surfaces of the plurality surfaces according to the plurality of pose parameters of the plurality of surfaces; and determining an intersection point defined by the intersecting intermediate planes as the geometric center point of the osteotomy guide block , and calculating a pose parameter of the geometric center point of the osteotomy guide block in the coordinate system of the tool target . obtaining a plurality of pose parameters of a plurality of surfaces of the osteotomy guide block of the osteotomy guide tool in the coordinate system of the tool target ; calculating an intermediate plane between every two opposite surfaces of the plurality surfaces according to the plurality of pose parameters of the plurality of surfaces; and determining an intersection point defined by the intersecting intermediate planes as the geometric center point of the osteotomy guide block , and calculating a pose parameter of the geometric center point of the osteotomy guide block in the coordinate system of the tool target . <EOS>