To provide a sphere-manufacturing method which is applicable for decoration, enjoyment and the presentation of a gift by combining different pure natural materials.

In the sphere-manufacturing method, a combined body in which an inserter 1 with a horseshoe-shaped cross section is securely inserted into a guider 2 with a notch large enough to allow the close insertion of the inserter 1 is cut out to be formed spherically at its center. In the manufacturing method, the sphere is divided into different usages depending on the kind of the horseshoe shape. The sphere with the circular horseshoe shape is used to complete a ball of baseball or softball, that with the U-shaped horseshoe is to do a ball of tennis and that with the oval horseshoe shape is to do a ball of basketball. Gorging at the center part of the inserter makes a large size of the sphere lighter.