Abstract: In order to reduce the numbers of seam，the article comes up a design idea of female′s shaping pants fabric which has different pressure areas with the physiological characteristics of the human body. Firstly, it begins with the theory of elasticity forming and physiological characteristics of the human body, analysing the basic method of forming different elastic area and the distribution and character of four center belts of tat in human body. Secondly, it integrates the basic theory of the designing of the underwear paper sample, and depends on the special characteristic of the RSJ5/1 EL warp-knitted machine. Then gives example of this fabric′s one cycle of pattern and knitting process which has three different pressure areas, the heavy pressure area, moderate pressure area and light pressure area, Finally. it gives the pictures of jacquare design of the different areas.