Abstract: The DBS series digital electrical drilling rig is developed to perform safe and sound drilling with low cost,and it integrates the AC variable frequency,vector control,bus communication,digital programmable control and computer technology,and builds a platform of digit,information and intelligence.Full digital control is realized for the rig,and it sets a base for establishing the drilling engineering database and long distance supporting system.The design and performance of the drilling rig is advanced,and it sets a sample for intelligent drilling in the near future.