Data verification method, device and system

The invention discloses a data verification method, a data verification device and a data verification system. The data verification method comprises the following steps of: according to a current state space corresponding to n processors in a circuit and a target state space, carrying out searching in a pre-acquired excitation database to obtain at least one target excitation, wherein each target excitation is an excitation required by jumping between the current state space and the target state space; executing each target excitation, indicating a first processor to execute a command in the target excitation, and after the first processor finishes executing the command in the target excitation, judging whether the state space formed by working states of the n processors and the target state space belong to the same type of state space; and if a judgment result is Yes, continuously executing the next target excitation and obtaining a verification result that data stored in the N processor is same until all the target excitations are executed, so that the efficiency of verifying the Cache consistency of each CPU (Central Processing Unit) in the circuit is effectively improved.