A fiber-reinforced composite material molding apparatus comprising: a molding die having a molding surface (20a, 20b) on which a fiber base material can be disposed, the molding surface extending along a first direction; a hermetically sealing member configured to seal the fiber base material in the molding die to form a hermetically sealed space; an intake part configured to intake air in the hermetically sealed space to depressurize the hermetically sealed space; and a resin injection part configured to inject a resin material into the fiber base material sealed in the hermetically sealed space depressurized by the intake part, the molding die including: a main body portion including a first groove portion that extends along the first direction and is connected to the resin injection part, second groove portions that are formed at a plurality of positions in the first direction and extend along a second direction crossing the first direction, characterized in that the molding die includes: a step portion that extends along the first direction and is disposed between the first groove portion and the second groove portions; and a lid portion that extends along the first direction, is disposed being in contact with the step portion to cover the first groove portion, and forms a part of the molding surface, either the main body portion or the lid portion including a communication groove through which the first groove portion is communicated with the second groove portions. a molding die having a molding surface (20a, 20b) on which a fiber base material can be disposed, the molding surface extending along a first direction; a hermetically sealing member configured to seal the fiber base material in the molding die to form a hermetically sealed space; an intake part configured to intake air in the hermetically sealed space to depressurize the hermetically sealed space; and a resin injection part configured to inject a resin material into the fiber base material sealed in the hermetically sealed space depressurized by the intake part, the molding die including: a main body portion including a first groove portion that extends along the first direction and is connected to the resin injection part, second groove portions that are formed at a plurality of positions in the first direction and extend along a second direction crossing the first direction, characterized in that the molding die includes: a step portion that extends along the first direction and is disposed between the first groove portion and the second groove portions; and a lid portion that extends along the first direction, is disposed being in contact with the step portion to cover the first groove portion, and forms a part of the molding surface, either the main body portion or the lid portion including a communication groove through which the first groove portion is communicated with the second groove portions. a step portion that extends along the first direction and is disposed between the first groove portion and the second groove portions; and a lid portion that extends along the first direction, is disposed being in contact with the step portion to cover the first groove portion, and forms a part of the molding surface, either the main body portion or the lid portion including a communication groove through which the first groove portion is communicated with the second groove portions.