The invention discloses a solid tire fabrication method which includes that: a foam inner tire tube is fixed in a tire forming mold, and the mold is closed, foaming material liquid is injected through a plug hole to enable the foaming material liquid to fill in the inner cavity of the mold and evenly cover on the inner tire tube, the foaming material is solidified to form a solid tire covering on the foam inner tire tube. The fabrication method utilizes the foam inner tire tube to form a hollow space inside the solid tire, the foam is crushed during actual use process and the volume is reduced to form certain buffer space so that the solid tire has better use comfort.