Abstract: According to the investigation, it is found that there are some problems in the arrangement of the orthogonal test factor level table in the literature, such as the inaccurate table title, the Irregular Arrangement Format of the Item Column Information, the wrong column in the first column from the left, the relationship between the column and the table data does not conform to the requirement of uniformity, the factor symbol is regarded as the quantity symbol and arranged in Italics, etc. . In view of the above problems, some suggestions are put forward: taking "the level of the factors" as the table title; using parentheses to indicate the coincident relationship of the factors and their symbols, i. e. , arranging them in the form of "temperature (a) " ; Change the column "factor" to "level" ; the factors are listed correctly; the rest are arranged according to the table routine. The method accords with the editing and proofreading standard, greatly simplifies the form design, and provides reference for the standard layout of the table in books and periodicals.

Key words: orthogonal test, factor, level, factor code, table title, item column, column