The invention discloses a concrete baffle wall structure capable of freely draining water. The concrete baffle wall structure comprises a concrete baffle wall located on a structure foundation surface; a sand-free concrete strip is arranged on the back of the concrete baffle wall; the back of the sand-free concrete strip is provided with an anti-filtration material; the back of the anti-filtration material is provided with a wall back refilling body; and a foundation drainage ditch is formed in the bottom of the sand-free concrete strip. According to the concrete baffle wall structure, the material price differentiation and performance advantages are fully utilized, the stability of the baffle wall structure is remarkably improved, the economical efficiency of sections is high, the functional effects among the structural materials is obvious, the design is easy, and the stability is reliable; and meanwhile, the construction condition is good, the interference is small, more than one quarter of concrete investment can be saved compared with the prior art, and the safety guarantee is good.