To facilitate mounting of a second member on a first member having a plate shape while the first member is supported in a state of being deformable due to gravity. A method for manufacturing a component includes: a step (S13) where a supporting robot supports a skin having a plate shape in a state where the skin is deformable due to gravity, and a support state of the skin is changed based on teaching data based on a deformed shape of the skin, which is recorded in advance in a storage unit and which is obtained at the time of mounting a frame on the skin; and a step (S15) where a mounting robot makes the frame overlap with the skin where a support state is changed.

To facilitate mounting of a second member on a first member having a plate shape while the first member is supported in a state of being deformable due to gravity. A method for manufacturing a component includes: a step (S13) where a supporting robot supports a skin having a plate shape in a state where the skin is deformable due to gravity, and a support state of the skin is changed based on teaching data based on a deformed shape of the skin, which is recorded in advance in a storage unit and which is obtained at the time of mounting a frame on the skin; and a step (S15) where a mounting robot makes the frame overlap with the skin where a support state is changed.