Abstract: Some geotechnical surveying data in Chengdao sea area were collected, summarized and ana-lyzed. By drawing surface soil distribution figure, calculating the mean value, variation coefficient, and correlation coefficient of silty clay, silt and mud, some conclusions were got. sediments deposition of Chengdao sea area are mainly composed of silt and silty clay; the variation coefficients of gravity, water content, void ratio, liquid limit and plastic limit are little, however, the coefficients of compression param-eters are relatively large; the soil void ratio, gravity and compression parameters can be calculated by wa-ter content according to the forum fitted in this article. Finally, the non-uniformity of soil property was calculated by spatial recursive method based on the Vanmarcke Random Field Model. The vertical relation distances lie in 0.49~0.93 m, close to those on land in China.