The Pharmaceutical market is competitive and performance oriented this requires effective use of current pharmaceutical science, engineering and knowledge to improve productivity, quality, profitability and regulatory compliance. With advancement of technology a Pharmaceutical company is on cutting edge of quality implementation using high end technology to ensure quality end product. We cannot solely rely on end product testing for pharmaceutical products because of its obvious limitations. Quality cannot be simply assured by testing of product it can be build by design.To accomplish this well designed system must be in place. The well organized system which functions for above objective is called quality assurance system.Present book is an attempt to introduce one with with the basic concept of pharmaceutical quality assurance.