With the development of the society, secondary professional English teaching plays a more and more important role in the course of training qualified personnel for socialist construction.

This article takes a discussion on fundamental issues of vocational English teaching reform with a constructionist and cognitive view,and tries to point out the key to successful reform is to establish a student-centered teaching model with outdated teaching concepts discarded,modem knowledge view reconstructed as well as quality-oriented education upheld.

In the light of its cultural context, social function and lexical construction, the appearance and application of English occupational euphemism in traditional and modern cultural context aim at satisfying occupation dignity, raising social status and avoiding unpleasant association and culture shock, the analysis and understanding of which is instructive in College English teaching.