Objective This paper is aim to provide a digital evaluation method based on Multiple Electrical Performance Parameters (MEPP), to evaluate the health of the medical devices scientifically. Methods Firstly, the circuit characteristics of the medical devices were analyzed to establish the theoretical basis and evaluation index for the evaluation system. Then, based on the experience of the health status of medical equipment in the whole life cycle, the health status of the medical devices is correlated with the electrical performance parameters in this paper. Finally, this paper selected 4 different brands of monitors. The maintenance records of our hospital as result were to gain the stability of each brand, and calculate the stability value of 4 devices through the electrical performance. The health status is scored and evaluated at last. Results The experimental result shows that the scores of 4 devices are 83.9, 88.1, 89.5, 81 respectively. After checking and comparing the maintenance frequency, it is found that it conforms to the order of stability. And the experiment results of the same brand monitor also show that the stability is consistent. Conclusion Aiming at the electrical performance parameters of the monitors, this study provides a scientific evaluation for the health status of the monitors and similar medical equipment. It’s a basis for new computer technology application to traditional circuit detection.