Because there are obvious differences of the structure between the presentation layer of a B/S system and other software systems, it is difficult to clearly describe the structure of that layer of a B/S system by general methods. After analysing the characters of the structure of that layer, this paper introduced some standardization methods to write design documents which accords with the characters of the structure of that layer. It can be more clearly to describe the structure of the presentation layer of B/S systems by these methods. Now, these methods have been used in software projects with good effects.