This research attempt to develop one research method, it combines the qualitative and the quantification. Using a group of number to represent the different parts of popular clothing styles and establish an identification code system to help the qualitative clothing design carry on the quantification analysis. Then following the application test research, according to the code system to analysis the passing 10 year Paris and New York summer clothing collections. Through statistics analysis conduct 10 most popular summer clothing design represent by the numeric code, then using the identification code system also adding the current fashion trend to interpret the 10 conduct number code to 10 fashion style.