The instrument is used to carry out the compression test of soil, determine the relationship between soil deformation and pressure or pore ratio and pressure, and the relationship between deformation and time, calculate the unit settlement of soil, compression coefficient and index, rebound index, compression modulus, Consolidation factor, etc., the measurement items are determined by engineering needs.It is a high pressure consolidation instrument after the low pressure, medium pressure consolidation instrument. It can be used for both low pressure test and medium pressure test, as well as high pressure test.