| Following continuous improvement of market economy and increasingly maturity of consuming conception, improving the quality of products and increasing the profits is having been the strategic question of economy in our country which has been attention generally. 21th century is the century of quality. Following the prick up of quality competes and the quality system certification bring into effect, must quicken the research course of quality economy profit.Above all this article researched the basic theory of quality cost and quality loss, introduce the concepts, structure and main contents of quality cost anda quality loss, summed up the research of quality cost in country and abroad, analysis mainly theories quality cost and quality loss, pointed out the advantages and shortages of each theory. Bring much convenience into the application of these theories in quality management.Then, this article researched synthetically problems of external quality loss, and analysed deeply data of call center in TCL group corporation, setting up a quality guidelines system which can reflect the external quality loss in corporation efectively, making synthesize quantitative analysis to external quality loss, forming a mathematics model to quantitative analysis external quality loss, and figour out relative methods of existing problems in corporation from Value Engineering angle. |