In order to improve the soil in Hobq desert, this paper has dealt with such characteristics of palygorskite clays as gelatination, water absorbency and water conservation. Using local palygorskite_bearing clays from the Balagong mine, the authors conducted experiments on the formation of colloids, and the results show that the better ways seems to be ball-milling and colloid_milling under the onstant condition that the ratio of poly-acrylic acid sodium (PAAS) to water is 0.05 mL/100 mL. In this way, the ratio of soil to water reaches 20～21 g/100 mL, which is igher than that of rod_milling (18 g/100 mL) or churning up (6 g/100 mL). This study has provided a practicable method for desert control and opened up a new vista for the application of barren palygorskite clays.