The invention provides a circuit breaker nozzle materialablation resistance test method. The circuit breaker nozzle materialablation resistance test method comprises the following steps of: weighing a nozzle material before an ablation resistance test; clamping an electrode and the nozzle material; setting test parameters; starting a direct-current arc generation device and igniting a controllable direct-current arc to ablate the nozzle material; after the ablation resistance test is completed, taking out the nozzle material and weighing the nozzle material after the ablation resistance test; comparing the weight of the nozzle material before the ablation resistance test with the weight of the nozzle material after the ablation resistance test to obtain a weight loss. As compared with high-voltage large-current arc and small-current arc tests, the ablation effect of the thermal effect and optical effect of arc on the nozzle material is simultaneously reflected; the test parameters can be set, the repeatability is good and the occasional influence of the test is eliminated; the lost weight of the nozzle material before and after one time of arc ablation is used as an index for evaluating the ablation resistance performance of the nozzle material; the test data are comprehensive, the operation is simple to perform, the cost is low and the credibility is high.