The invention belongs to the field of safety monitoring, and discloses a binary logic digitalization method for safety monitoring. A value domain sub-region corresponding to each safety grade of the monitoring parameter and a corresponding safety grade and a safety state are determined through decomposition, work packet and safety risk factor obtaining and parameter monitoring and encoding. The safety states of the monitoring parameters are acquired through the internet-of-things elements and uploaded. A safety state of a binary logic vector is adopted, and a safety level state where the monitoring parameter is located is digitally expressed. In order to achieve binary measurement and safe state expression of specific monitoring parameters, and hardware of the value-domain sub-interval limit values corresponding to different safety levels of the monitoring parameters is performed in a corresponding internet-of-things elements, is used as a preset judgment rules, so that the safety state of the front end can be judged. The two-value logic measurement of the safety state of the monitoring parameters can be completed more efficiently.