The invention discloses a guard pile dedicated to a motor train unit body impact test platform. The guard pile comprises an impact platform base with an impact platform, and further comprises guard pile bases connected with the two sides of the impact platform base, main guard piles which are buried in the impact platform base, vertically extend outwards, and are arranged along the two sides of the impact platform and around a non-impact surface, and auxiliary guard piles which are buried in the guard pile bases, and vertically extend outwards, wherein a plurality of groups of transverse and longitudinal rebars which extend into the impact platform base are poured inside the guard pile bases; connecting pieces are arranged between the main guard piles and the impact platform base, and between the auxiliary guard piles and the guard pile bases; the connecting pieces are trapezoid structures with bevels and top surfaces; connecting holes are formed in the top surfaces of the connecting pieces; the connecting pieces are fixedly connected with the main guard piles and the auxiliary guard piles; and anchoring systems are arranged among the connecting pieces, the guard pile bases and the impact platform base. The guard pile is simple in structure, safe and reliable to use, high in connection strength and good in protective property.