The invention relates to a testing device and a testing method for a relay protection device. The testing device comprises a microprocessor, a temperature sensing mechanism, a humidity sensor, a camera, a button circuit, a positioning module, a computer, a power supply, an infrared communication interface and a GPRS module. The microprocessor is connected with the power supply. The microprocessormainly comprises a data acquisition unit, a data classifying unit, a testing early-warning unit and a data storage unit. The temperature sensing mechanism, the humidity sensor, the camera, the buttoncircuit and the positioning module are connected with the data acquisition unit. The infrared communication interface is connected with the data storage unit. The testing device and the testing methodmainly settle problems such as high workload and high paper consumption amount of field maintenance personnel in the maintenance process of the relay protection device. The testing device and the testing method for the relay protection device have advantages of effectively reducing working strength of maintenance personnel in recording and sorting information, improving maintenance efficiency andaccuracy, and greatly reducing power consumption amount for realizing higher environment-friendly performance in the sorting operation.