A system for inserting numeric labels automatically includes: a setting module (10) configured for setting label properties of inserting numeric labels to define a numeric labels configuration; an input/output module (12) configured for reading the label properties, importing a technical drawing file to be inserted with the numeric labels; a selecting module (14) configured for extracting an array of references to be inserted with the numeric label from the technical drawing file; and a labeling module (16) configured for labeling the references in the array of references with numeric labels correspondingly according to the numeric labels configuration. A related method is also disclosed.