Abstract: Cited with the controlled directional grouting engineering at Donghuantuo No.2 shaft of Kailuan Coal Mining Bureau as an instance,the design of anticipated track of the S-form controlled directional borehole using microcomputer and the process of monitoring data of the borehole during operation are introduced.The procedures and methods used in design of the programms,the relevant calculating formula and source programme for borehole design are given.And various examples of microcomputer application in borehole design,data process,optimized tracking and track plotting are enumerated.