Being focusing in Economy and commerce, Taiwan still can''t develop its automobile industry effectively due to small-scale economy local market. The automobile industry will loss its tariff protection after entering into WTO (World Trade Organization) in the year 2004; meanwhile three big car-maker in United States in 1995 announced its QS 9000 Quality Insurance Standard and asked its supplier must get the QS 9000 certification process during the year 1997-1998, otherwise will stop its purchasing, that''s the reason why the vehicle parts assembling industry then urgent to establish QS 9000 Quality System. The objective of this research will explore the following: the way to effectively establish enterprise''s QS 9000 by questionnaire investigation method such as: 1. How to introduce QS 9000 Insurance System? And what are the problems. 2. What are the factors that will influence installing time. 3. What''s the effect after installing this QS 9000 Quality System? 4. Comparing the difference between ISO 9000 and QS 9000, and try to give advice to enterprise about the issues that must be considered when it transforms from ISO 9000 to QS 9000 Quality System. This research uses relative frequency table, one way ANOVA, Chi-square test and multiple regression method to explore the difficulty level of execution the followings: 1. The basic requirement and specific technique requirement of section Ⅰ,Ⅱ,Ⅲ. 2. Whether the company basic terms will affect the enforcement of QS 9000 Quality Insurance System. Research result indicates that we can express the QS 9000 quality system installing time for the Vehicle part assembling industry in an equation. The important factors identified in this research include the number of workers, install method, starting time and whether the suppliers are one of the three big car-maker. Key words: QS 9000, ISO 9000, one-way ANOVA, CHI-SQUARE test, multiple regression.