NOVELTY - A solid substance molding apparatus (1) comprises first former with through-hole which is attached to material discharge side of material feed chamber (3), axial part which is supported in state in which front end part adjoined to internal peripheral surface of through-hole of first former so that rotation in material feed chamber is possible, first conveyance component which has feeder blade, second former with through-hole, and second conveyance component attached to front end side of first conveyance component so that through-hole of second former may be penetrated which has feeder blade.    USE - Solid substance molding apparatus for plant-derived biomass fuel.    ADVANTAGE - The molding apparatus provides plant-derived biomass fuel with small bulk specific gravity.    DETAILED DESCRIPTION - A solid substance molding apparatus (1) comprises first former with through-hole which is attached to material discharge side of material feed chamber (3) and diameter-reduced as heading to front end, axial part which is supported in state in which front end part adjoined to internal peripheral surface of through-hole of first former so that rotation in material feed chamber is possible and diameter-reduced toward front end side, first conveyance component which has feeder blade for sending material of material feed chamber to discharge side, second former with through-hole which is attached adjacent to front end side of first former and diameter-reduced as heading to front end, and second conveyance component attached to front end side of first conveyance component so that through-hole of second former may be penetrated which has feeder blade provided in position that opposes internal peripheral surface of through-hole of second former.. The apparatus compresses material injected in material feed chamber, extrudes in cylindrical sleeve connected to material feed chamber, and molds cylindrical solid substance.    DESCRIPTION OF DRAWING(S) - The drawing shows a longitudinal cross-sectional view of the solid substance molding apparatus.    Solid substance molding apparatus (1)    Main body casing (2)    Material feed chamber (3)    Driving shaft (5)    Core rod (6)