The invention relates to a continuous flow micro-channel reaction module which comprises two spliced plates. A longitudinally extending composite fluid channel is formed in the end surface of at leastone plate, three parallel runners form the composite fluid channels, a plurality of recesses are alternately distributed in each runner, and a projection is formed between two adjacent recesses. Therecesses in two side runners correspond to the projections in the middle runner, the projections of the two side runners correspond to the recesses in the middle runner, and a gap is formed between one recess in the middle runner and adjacent recess in each side runner and used for communicating one recess in the middle runner with the adjacent recess in each side runner. According to the novel structure of the composite fluid channel of the reaction module, relatively dense, continuously distributed fluid cutting and convergence mixing units are formed, the channel has huge specific surface area, the fluid mixing ability is enhanced, high mixing efficiency of reactants can be acquired, and the reaction module can be used for multiphase reaction containing solid particles through flowing solid particles.