Abstract: According to the present situation and the actual demand for the testpaper
database system of mechanical courses, some key technologies such as secondary development
of CAXA program, algorithm of auto-generation testpaper, as well as tips of intelligent
typesetting are researched, and then a software for testpaper auto-generation of mechanical
courses is designed and realized, which is seamless integrated into CAXA and convenient to
use. There is certain reference value for the development of the same kind computer aided
teaching software.

Key words: computer software, auto-generation testpaper, secondary development, CAXA