Abstract: In view of problems of difficult building, high cost, inconvenient carrying and easy damage existed in wired data transmission system of oil drilling machine, the paper proposed a design scheme of wireless data transmission system of oil drilling machine based on GPRS which taking domestic model Z12V190B diesel drilling machine with 12-cylinder as monitored object. The system uses embedded mode to realize functions of remote collection, wireless transmission and real-time monitoring of data combining ARM chip with GPRS module. The result of field test showed that data transmission of the system is stable and reliable, which ensures safe and powerful operation for drilling machine in field.