Abstract: In order to achieve the digitization and intelligence of rotary drilling in surface mines，a more accurate and reliable digital drilling and automatic lithology identification technology was developed，which includes both hardware and software system.The hardware consists of a positioning，navigation and lithology perception terminal system，and a wireless data transmission system.The terminal system mainly consists of GPS OEM board，Programmable Logic Controller and sensors of measuring major parameters，and and a wireless data transmission system combines digital blasting platform and wireless transmission facilities.The software includes the navigation software of locating blast holes using LabView and VC++，and the blasthole network design software using AutoCAD ActiveX (C#) technologies.This new technology is applied in Jiangxi Dexing Copper Mine，initially realizing the digitization of drilling and lithology identification in blasting zone.

Key words: Design process of holes network, GPS OEM, Rotary drill rig, Open-pit mine, Lithology identification