For the identification of Milleporidae in this paper four designs are given as follows: (1) According to the morphological characters of the studied materials, the computer can present a rapid way to help in identifying specimens and to answer the tpecies name at well at its synonyms. (2) The user can take the second design, if asking for synonyms, numbers and a check of the synonyms are shown on the Video Display of the micromputer. (3) If you want to know the morphological characters of a certain specics, you can take the third design, that is, input a valid species name and its morphological characters will be output automatically. (4) When asking for a valid or an invalid species of Millepora, you caa sclect the fourth design, i.e.input its Latin name and the computer will answer "it is a valid species" or "it is an invalid species and the synonym of a certain valid species".