Fish-scale pit is one of the soil and water control measures in the slope,and it is also a kind of slope afforestation site preparation methods.Due to its simple construction,storing surface runoff,the effect of maintaining soil and water,and promoting the growth of trees is relatively remarkable,it is widely application.In order to study soil moisture of fish-scale pits of different specifications by using fixed-point monitoring methods,soil moisture of fish-scale pits of four specifications in the Loess Plateau region of Northern Shaanxi Province was studied.Results showed that different specifications had a significant impact on soil moisture content.In terms of soil water on semi-sunny steep slope and extremely steep slope,specifications may be ranked in the descendant order of middle,large,small,smaller and contrast,in terms of soil water on semi-shady gentle slope and shady gentle slope,in the descendant order of large,middle,small,smaller and contrast.