The method for calculating engineering quantity of a basic hole comprises: defining an attribute of a basic component, creating an attribute of a component of the basic hole, arranging the hole and forming a data value by a multi-thread algorithm. The system for calculating the engineering quantity of the basic hole comprises a GSP database, a Grid control, a hole graphic element arrangement module and a calculation module. According to the system and the method for calculating the engineering quantity of the basic hole, provided by the present invention, a basic graphic element three-dimensional model is drawn, then values related to the hole in horizontal and vertical directions and the like are input, and a distance from the hole to the edge of a device and a hole spacing value are determined, so as to intelligently arrange the hole, achieve rapid arrangement of the basic hole and accurately extract the engineering quantity.