Abstract:The advantage of uniform design and usage of uniform design table are introduced in this paper. The uniform design seeks experimental points to be uniformly scattered in the experimental domain. The practical success of uniform design is due to its economical and flexible experimental runs to study many factors with high levels simultaneously. Uniform design is widely accepted especially in the situations where little knowledge is known about the function to be modeled,especially for nonlinear model, and also in the field of geotechnical engineering. An example is given about displacement back-analysis problem of rockmass parameter to support the application of uniform design. At last,some suggests are pointed out about uniform designs. It is not good to decrease the number of runs of uniform designs one-sidedly and attention should be paid to the selection of key factor and its range。