In organizing a Web courseware,the problem of relative location of layers is always encountered, and other problems like the using of sound and the communication between HTML and Flash are also the things that make many people puzzled.

We have to study the expressing characters of Suzhou woodcut from its image characters, and it is an effective way to compare the depiction in the w.

Targeting the problems existing in drawing the passenger train flow diagram by hand, the essay develops the CAD system for passenger train flow diagram and respectively elaborated its three composites—the railway network, train flow lines and automatic drawing of diagram from the aspects of calculation method, idea and approaches.