The invention relates to a direct voltage transformer detection system based on a voltage-stabilized standard source. The direct voltage transformer detection system based on the voltage-stabilized standard source includes a high-precision voltage-stabilizing output unit, a high-precision analog acquisition unit, an analog-to-digital conversion unit, a high-precision digital acquisition unit, anda calibrator compatible with analog and digital. The invention also relates to a detection method using the direct voltage transformer detection system based on the voltage-stabilized standard source.The invention can comprehensively detect the analog output and digital output of the direct voltage transformer at the same time, and meets the accuracy requirements of the related regulations on thefield calibration and calibration test of the direct voltage transformer.