A component mounting system equipped with multiple component mounting devices (10; M1 to M5) lined up in a board conveyance direction, with each component mounting device having an imaging device to capture an image of a board (S), the component mounting system comprising: a learning device configured to: - capture a post-component-mounting board image after component mounting, - acquire training data based on the captured post-component-mounting board image and - create learning data using machine learning based on the acquired training data; an inspection device configured to: - capture a post-component-mounting board image, and - perform an inspection of the post-component-mounting board under a first inspection condition or under a second inspection condition having inspection accuracy inferior to that of the first inspection condition by performing component recognition image processing on the captured post-component-mounting board image using the created learning data; and a memory device ; characterized by the memory device configured to, when inspection of a post-component-mounting board is performed under the second inspection condition, - link the captured post-component-mounting board image with i) inspection information indicating that inspection was performed under the second inspection condition and ii) identifying information which identifies the post-component-mounting board, and - record the captured post-component-mounting board image. a learning device configured to: - capture a post-component-mounting board image after component mounting, - acquire training data based on the captured post-component-mounting board image and - create learning data using machine learning based on the acquired training data; - capture a post-component-mounting board image after component mounting, - acquire training data based on the captured post-component-mounting board image and - create learning data using machine learning based on the acquired training data; an inspection device configured to: - capture a post-component-mounting board image, and - perform an inspection of the post-component-mounting board under a first inspection condition or under a second inspection condition having inspection accuracy inferior to that of the first inspection condition by performing component recognition image processing on the captured post-component-mounting board image using the created learning data; and - capture a post-component-mounting board image, and - perform an inspection of the post-component-mounting board under a first inspection condition or under a second inspection condition having inspection accuracy inferior to that of the first inspection condition by performing component recognition image processing on the captured post-component-mounting board image using the created learning data; and a memory device ; characterized by the memory device configured to, when inspection of a post-component-mounting board is performed under the second inspection condition, - link the captured post-component-mounting board image with i) inspection information indicating that inspection was performed under the second inspection condition and ii) identifying information which identifies the post-component-mounting board, and - record the captured post-component-mounting board image. - link the captured post-component-mounting board image with i) inspection information indicating that inspection was performed under the second inspection condition and ii) identifying information which identifies the post-component-mounting board, and - record the captured post-component-mounting board image. <EOS>