Abstract: Model HA-1 Soil Thermal Parameter Finder ,developed by Inst. of Rock and Soil Mech. Academia Sinica, is fitted out with an automatic system of data acquisition and processing which takes a KC-85 micro-computer as its principal part. This automatic system can make real-time data acquisition and processing and print and plot testing results automatically, thereby the soil thermal parameters will be determined rapidly and accurately. This paper deals briefly with the composition, function, interface principle of the system 11s well as the essentials of programming.