It's an important application of multimedia communication in the Distance Education. So WBT (Web Based Teaching), one of distance teaching modes on the ground of Web is put forward at first in this thesis. Then a detailed analysis on the data of multimedia used by communicated object is followed. In accordance with the tapping of WBT as one mode of multimedia teaching system, the authors discussed the characteristics and the contract that is for the multimedia communication in the distance teaching, so that the ...