Abstract: To obtain an optimal condition in production, this paper deals with the Fuzzinessmethod of processing the experiment data for multi-targets and multi-factors. In otherwords, it describes a mapping ensemble from observation values of the experiment targetto Fuzzy subsets. On this basis, applying the princple of Fuzzy comprehensive evaluation,the author presents the msthod to optimize the levels of the factors with weighting to themulti-target in the orthogonal experiments. As compared with tradition process, it showsscientific and advanced character.