Construction method for pile

The invention discloses a construction method for a pile. The construction method comprises the following steps of performing emplacing, performing pile sinking, performing casting, and performing pile molding. The pile molding method is one of the following methods: a) emplacing a prefabricated pipe pile in a hollow steel pipe core pile, and enabling the pipe pile to sink to a set depth; and casting concrete without drawing out an outer pipe to form a composite core pile of which the upper part is a concrete-filled steel pipe and the lower part is the prefabricated pipe pile; and b) emplacing a prefabricated pipe pile in a hollow steel pipe core; enabling the prefabricated pipe pile to sink to a set depth; and drawing out the outer pipe without casting concrete to form a prefabricated pipe pile core pile. The construction method disclosed by the invention is convenient to construct, and good in effect.