The purpose of the present invention is to provide a 
fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a 
fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a 
fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between 
cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a 
coating step applying a 
coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a 
cutting step for 
cutting a long 
fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the 
cut fiber bundles (CF) and scattering the 
cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a 
fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).