The invention discloses an intelligent test device, system and test method for the oscillating characteristic of a direct current breaker. The test device comprises a direct current adjustable stabilized voltage supply, a current detection unit, a data acquisition and processing unit, a direct current power supply air switch K1 and a voltage test air switch K2, wherein the output end of the direct current adjustable stabilized voltage supply is connected in series with the direct current power supply air switch K1 and then used as a power output end, one end of the voltage test air switch K2 is connected in parallel with the power output end while the other end is connected with the data acquisition and processing unit, and the output end of the current detection unit is connected with the data acquisition and processing unit; the test system comprises the test device and the direct current breaker; and the test method comprises the steps of charging a capacitor of the direct current breaker, then analyzing the oscillating characteristic according to the voltage or current and outputting the analysis result, thereby realizing automatic reading of data and automatic calculation of results. The device, the system and the method are high in detection sensitivity, low in implementation cost and high in detection efficiency, and can record detected data in real time, realize automatic detection of data, relieve the workload of site detection and provide multiple detection modes for users to select.