An information processing method of digital control systems of nuclear power units, wherein the method comprises the following steps: outputting (S101) through a main program body a task information, as well as a digital operational list information and a supporting interface information corresponding to the task information, and searching for a digital operational list corresponding to a specified task according to the main program body ; outputting (S102) task details, device information to which the task details correspond, and task link information through the found digital operational list ; the digital operational list sends a link instruction to a supporting interface , and the supporting interface that receives the link instruction outputs cross-system supervisory parameters and operating instructions (S103); characterized in that the method further comprises the following steps before the step of outputting through (S102) the main program body the task information, as well as the digital operational list information and the supporting interface information corresponding to the task information, and searching for the digital operational list corresponding to the specified task according to the main program body : isolating related operations of a master control room from paper-based regulations, and generating the main program body according to contents in the paper-based regulations after isolating the related operations of the master control room; and according to different targets and tasks, generating the digital operational list corresponding to the tasks from the related operations of the master control room isolated from the paper-based regulations. outputting (S101) through a main program body a task information, as well as a digital operational list information and a supporting interface information corresponding to the task information, and searching for a digital operational list corresponding to a specified task according to the main program body ; outputting (S102) task details, device information to which the task details correspond, and task link information through the found digital operational list ; the digital operational list sends a link instruction to a supporting interface , and the supporting interface that receives the link instruction outputs cross-system supervisory parameters and operating instructions (S103); characterized in that the method further comprises the following steps before the step of outputting through (S102) the main program body the task information, as well as the digital operational list information and the supporting interface information corresponding to the task information, and searching for the digital operational list corresponding to the specified task according to the main program body : isolating related operations of a master control room from paper-based regulations, and generating the main program body according to contents in the paper-based regulations after isolating the related operations of the master control room; and according to different targets and tasks, generating the digital operational list corresponding to the tasks from the related operations of the master control room isolated from the paper-based regulations. isolating related operations of a master control room from paper-based regulations, and generating the main program body according to contents in the paper-based regulations after isolating the related operations of the master control room; and according to different targets and tasks, generating the digital operational list corresponding to the tasks from the related operations of the master control room isolated from the paper-based regulations. <EOS>