Anti-seismic building pile

The utility model relates to the technical field of buildings, in particular to an anti-seismic building pile. The pile cap structure comprises a pile cap, a pile foundation and a pile head, the pile cap is provided with a supporting column with external threads, and the pile foundation is provided with an internal threaded hole so that the pile foundation can be in threaded connection with the supporting column; the end, away from the pile cap, of the pile foundation is a conical part, a plurality of closing grooves are formed in the conical part in the length direction of the pile foundation, conical part external threads are arranged on the outer side face of the conical part, and a conical internal threaded hole is formed in the pile head so that the pile head can be in threaded connection with the pile foundation. By eliminating the connecting gaps among the pile cap, the pile foundation and the pile head, the possibility that the building pile is loosened and falls apart during an earthquake is reduced,