Abstract: In order to solve the problems of limited function, operating inconvenience and insufficient information fusion of the available software for measurement while drilling (MWD) in coal mine, a new software for MWD and borehole data processing using C language and SQL Server database has been developed. The software has three function modules including MWD, borehole data processing and monitoring-diagnosis of drilling machine, and can be used to conduct the analysis of probe data, the real-time measurement of borehole trajectory, the deep mining of borehole trajectory data, the real-time monitoring-diagnosis of drilling machine status. The integration of the above three modules can simplify the operation of constructors, help them to grasp comprehensive construction information and make corresponding decisions in time. The field tests shows that the present software for MWD and data processing is stable, accurate, multifunctional and easy to operate, which provides technical support for the optimization of directional drilling construction.