Rock drillability is the key for drilling efficiency， which reflects the fragmentation， and is the base for drilling model， type of drilling bit and drilling parameters designing. According to the calculation method of rock drillability and the logging data， the profiling of rock drillability is built， based on which, different types of drilling bit are suggested. The application results show that these drilling bits can increase penetration rate in the central part of Junggar Basin with guiding significance to bit selection for subsequent drilling.