While using the original bundled software of gyro-inclinometer JDT-6, serial and parallel ports have to be used at the same time for communication and the software only works with Windows 98 and according to the new requirement in engineering practice, the software GyroSProcess was developed for gyro-inclinometer JDT-6 by VB6. In addition to covering the original functions, this new software has the following advantages: the serial and parallel channels are combined into one USB or COM port; the existing survey data can be imported to GyroSprocess with data acquisition workload reduced and the efficiency of deviation survey improved; the winch operation is controlled automatically by computer, which enables data acquisition process automation; by oriented programming technology, the inclination survey maps can be converted to AutoCAD format. The paper introduces key technologies and algorithm adopted for function adding on this new software. The site test shows that the measuring result by GyroSProcess software is the same as that by the old one. Therefore, GyroSprocess will replace the old software as new accompanying software of gyro-inclinometer JDT-6.