Abstract: This paper mainly introduces the change from manual operation and artificial survey of domestic triaxial boxshear apparatus to microcomputer control and detection for soil test . The system can automatically complete data sampling,display, drawing and tabulation, as well as data processing that can not be conpleted by artif icial operation experiment,and can automatically compensate to improve the level and accuracy of performance test of soil power with the help of system software when tested soil example has a large deformation.

Key words: triaxial boxshear apparatus, microcomputer, control, test