Pile foundation positioning device

The utility model discloses a pile foundation positioning device which comprises a pile casing, a positioning hole penetrates through the pile casing in the height direction of the pile casing, the pile foundation positioning device further comprises two fixing blocks used for being erected at the top end of the pile casing, and a fixing groove used for being matched with the outer wall of the top end of the pile casing in an inserted mode is formed in the bottom face of each fixing block. Positioning plates used for assisting in positioning the pile foundation are arranged on the inner walls of the fixing blocks, the two positioning plates are oppositely arranged in the positioning holes, and driving parts used for driving the positioning plates to move in the positioning holes in the diameter direction of the positioning holes are arranged between the positioning plates and the fixing blocks; the fixing block is provided with a limiting piece used for preventing the fixing block from being separated from th