The invention relates to the field of pile foundation load tests and particularly relates to a pile foundation test loading device which is relatively great in quantity of involved single engineering piles and relatively great in load. The invention discloses a large-tonnage pile foundation test loading device. The large-tonnage pile foundation test loading device comprises a cone-shaped beam, anchor pile sets and loading systems. The cone-shaped beam comprises a column, diagonal draw bars, cross arms and connecting systems; the anchor pile sets are arranged below the joints of the diagonal draw bars and the cross arms of the cone-shaped beam, and the loading system is arranged between the bottom of the column of the cone-shaped beam and the top of a test pile. By adopting a structural body where the cone-shaped beam is matched with the anchor pile sets, large-tonnage test load application can be realized. The assemblies of the device are detachably connected and the device can be adaptive to the condition that the quantity of the single engineering piles is relatively great and the load is relatively great, so that the construction efficiency is effectively improved and the construction cost is effectively lowered; an anchoring loading device is continuously used.