An electronic drawing and engineering quantity associating method comprises steps as follows: messages such as characters, lines, filling and the like of drawings in original item divisions are converted into character primitives of a software interface with a CAD (computer aided design) import interface technology; according to the original item divisions contained in the drawings, item divisions such as a main transformer, an indoor switchgear, an outdoor switchgear, a series-compensation device and the like are newly established; corresponding association relationships are established according to drawing titles and the newly established item divisions; the messages in material lists of the newly established item divisions are converted into electronic calculation sheets according to a designated sequence; engineering quantities of the corresponding drawings are checked in the interface by clicking different newly established item divisions. According to the electronic drawing and engineering quantity associating method, the electronic drawings and the calculation sheets about the engineering quantities are associated for display, the engineering quantities are convenient to check, and time and labor are saved.