The article summarize the general methods and special techniques of fast design from four aspects,which are understanding fully the characteristic of fast design examination,arranging availably the time of examination,choosing correctly the design method and expressing adequately the effect of drawing.

Guided by the soul of the Chinese traditional culture of be "gentle",the representation form,content,and existing problems product effect picture were analyzed.

This system has the following functions:displaying engineering effect picture of views, displaying dynamically the ubiety of buildings, introducing the survey of hydraulic buildings, providing the design data of hydraulic buildings.

Every designer of interior and exterior design of three-dimension space should master the technique of producing three-dimension space effect picture.

Based upon introduction of Corporate Identity System(CIS) of real estate project the expression of CIS of real estate projects is analyzed from real estate sales center,field advertising board,sand table,effect drawing, sample house and other aspects in order to permeate project image to life of target customers to make profits for investors.

It is an important problem to convert designed effect drawing to techniques picture in the department of Zaran CAD system.