[PROBLEMS] To provide a composite material manufacturing method and composite material manufacturing method capable of forming a high-quality composite material with less shape restrictions by suppressing formability variation during pre-molding and improving moldability. An object is to provide an apparatus, a preform and a composite material. A method of manufacturing a composite material 400 is a method of manufacturing a composite material including a reinforced base material 510 and a resin 600 impregnated in the reinforced base material, wherein the first region 511 and the second region 512 are provided. From the first region, an application step (step S12) of applying an adhesive to the sheet-like reinforced base material provided with an adhesive so that the density of the adhesive 520 in the second region is lower than that in the first region; And a preforming step (step S17) of preforming a reinforced base material into a three-dimensional shape having a large curvature in the second region to form a preform. [Selection] Figure 1
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