The invention discloses a double-reactor coking raw material evaluation system, characterized in that: tubular reactors, condensers, liquid collectors and gas collectors are all two sets, two reactors are arranged individually, one of the reactor is a standard sample reactor used for holding standard samples, the other reactor is a sample to be tested reactor for holding samples to be tested, the heater is a container having two inward cavities which are isolated from each other, the standard sample reactor and the sample to be tested reactor respectively stick into the two inward cavities and are immersed in the heating medium of an external heating source; the two reactors are respectively communicated with the liquid collectors through liquid transport tubes, the condensers are arranges on the liquid transport tubes, and the liquid collectors are communicated with the gas collectors through gas transport tubes. According to the invention, by adopting the standard sample reactor and the sample to be tested reactor, the standard samples can be used for eliminating the difference of residual oil yields of the samples to be tested caused by different reaction processes in parallel experiments, thus the data of the samples to be tested are accurate, and the parallelism is good; and the standard samples can be used for controlling the reaction process of each experiment.