The invention relates to a highly efficient pile-driver tower with tunable spacing of the piles which can hammer many piles at the same time. The invention structure provides a groove on a chassis, arranges a plurality of uprights bottom on the groove, fixes and connects the uprights and the chassis by bolts and connects every two uprights by correcting element. The invention overcomes the defeats of slow speed, low efficient, time consuming and high intensity due to repeatedly hammering piles one by one. The invention takes full advantage of the lateral length and space of the chassis, even if the distance between the piles is different, the distance between piles can be changed as long as longitudinal shift of the uprights is carried along with the slide groove of the chassis, when moving to another place to hammer the piles. The invention has simple structure and low cost, the chassis of one pile-driver tower can be used by a plurality of uprights at the same time, a hollow groove is easy to gouge on the chassis and the operation is simple, feasible and time-saving.