Abstract: Ground polymer has the characteristics d rich in raw materials，high temperature resistance ,high volume stability ，high mechanical strength，good durability and good effect d solid sealing of heavymetal ions.Moreover , it has better performance than metals , ceranmics , cement， etc. 'The perfomance ofit is analyzed by experiments，including the permeability and mechanical properties of ground polymersoil and an example is given to analyze the specific application of ground polymer in soft land base treat-ment. 'The results show that the permeability coefficient df the ground polymer soil can reach the magni-tude of 10-° , and the ground polymer can significantly reduce the permeability of the original soil andmake the strnucture inside the soil mare compact.'"The shear strength and oompressive strength of 90 d arepositively correlated. 'The compressive strength of 90 d ground polymer soil is higher than that of hydro-soil and undisturbed soil. Through the study above，the soft soil foundation can effectively improve thebearing capacity of the soft soil foundation.

Key words: ｇｒｏｕｎｄｐｏｌｙｍｅｒ, ｓｏｆｔｌａｎｄｂａｓｅ, ｐｅｒｍｅａｂｉｌｉｔｙ, ｃｏｍｐｒｅｓｓｉｖｅｓｔｒｅｎｇｔ