The invention discloses a water flow scour preventing foundation structure, belongs to the field of building construction and provides the water flow scour preventing foundation structure which is simple in structure, convenient to construct and used for deepening a coverage layer foundation. The water flow scour preventing foundation structure comprises a foundation coverage layer and foundation piles arranged in the foundation coverage layer and is characterized by further comprising baffles, wherein the baffles are arranged among the foundation piles surrounding the foundation coverage layer. The foundation coverage layer is wholly surrounded through the baffles and the foundation piles. The baffle structures are arranged among the foundation piles surrounding the foundation, so that water flows surrounding the foundation are blocked by the baffles, the internal foundation coverage layer is prevented from being scoured, and further the foundation stability is prevented from being destroyed. The water flow scour preventing foundation structure is ingenious in structure and is also very convenient to construct.