Embodiments of the invention disclose a file inspection method and apparatus, and a storage medium. The method comprises the steps of obtaining a to-be-detected file; inputting the to-be-detected fileinto at least two RIPs (Raster Image Processors) to obtain a dot matrix output by each RIP; comparing the dot matrixes output by the at least two RIPs to obtain a dot matrix inspection result; and determining a check result of the to-be-detected file according to the dot matrix check result. That is to say, the embodiment of the application is provided, at least two RIPs are arranged; comparing the dot matrixes output by the at least two RIPs; the dot matrix is automatically detected, the problem that time and labor are consumed when the dot matrix is manually checked in the pre-printing processing process of a printed file is effectively solved, the processing efficiency of a pre-printing system is improved to the maximum extent, the dot matrix detection accuracy is improved, and printing accidents caused by incorrect RIP generated dot matrixes are avoided.