Abstract: Soil moisture content in arid valley region in the Upper Reaches of Min River is the key factor of agricultural production and ecological restoration.The soil moisture contents of four typical land use types (ecological forest,economic forest,cropland,wild grass ground) were investigated,and variation analysis and numerical simulation .of soil moisture content was carried to reveal relationship of soil moisture and soil depths. The results showed that: 1) The average content of soil moisture was ranked as follow:cropland(18.62%) > ecological forest(17.47%) > economic forest(16.53%) > wild grass ground(11.25%); 2) In vertical direction from the dry valley (1500 m) to timberline of the natural forest (2500 m), soil moisture content of forest land shows distribution characteristics of shallow U shape; Soil moisture average content was 19.77% at the altitudes 2100~2500 m area,13.72% at 1900~2100 m and 16.00% at 1700~1900 m; 3) In profile, soil water contents of the four land use types decreased with the increases of soil depth. The vertical changes of soil moisture content in ecological forest land and cropland partly were the most significant and relatively stable: 4) The soil moisture model for the research area was good to illuminate variation and profile distribution characteristics of soil moisture content; 5) Differences of forest land and wild grass ground show that average content of soil moisture with 14% was boundary value of forest land and wild grass ground.The research results can provide data support for ecological restoration in the upper reaches of Min River.