Drilling tail end executor and drilling system

The invention relates to the technical field of machinery processing and discloses a drilling tail end executor and a drilling system. The drilling tail end executor comprises a pressing module and a main shaft-feeding module, wherein the pressing module is formed by a pressing air cylinder and a pressing structure; the pressing structure is in a rigid connection with the main shaft-feeding module, so the pressing structure and the main shaft-feeding module can be driven on the whole to press a work piece during the drilling; even though work piece deformation happens during via hole drilling, feeding amount of the main shaft-feeding module can be in consistent with a drilling depth; a normal line of the drilling hole can be remained the same all the time; and drilling quality can be improved.