The embodiment of the invention discloses a DCS hardware configuration hidden danger checking system and method, and belongs to the field of thermal control and automation. The DCS hardware configuration hidden danger checking system comprises a data input module, a rule input module, a data processing module and a result output module, wherein the data input module is used for inputting a hardware configuration point list of the DCS; the rule input module is used for inputting a preset configuration rule of DCS hard points, the DCS hard points comprise a DCS test point and an instruction; thedata processing module communicates with the data input module and the rule input module, and is used for screening and classifying the DCS hard points according to the hardware configuration point list and detecting the screened and classified DCS hard points according to the configuration rule; the result output module communicates with the data processing module and is used for outputting a detection result of the data processing module. The DCS hardware configuration hidden danger checking system and method have the advantages that the working efficiency is improved by adopting a softwaredetection method in the DCS hardware configuration hidden danger scheme, the workload of a thermal worker is reduced, and the system and method are conductive to avoiding a phenomenon of missing detection.