Abstract: Due to conventional cementing is designed by rule of thumb,cementing quality can’t be assured.It is difficult to systematically consider the factors effecting cementing job only by experience.On the basis of rheological parameter of slurry in cementing,the measurement of slurry property,determining density of slurry,selecting displacement,controlling "U" type effect and centralizing casing strings is performanced by means of computer to design that applicated in eight wells of Haiwaihe oilfield and achieves good result.