The study of quality management is associated with improved quality. Improved quality also is basically related to the decision-making at every stage of the production process. The decisions made will determine the success rate of quality improvement can be achieved. To achieve optimal results, we need quality improvement model as a planning program. The impact is related to the cost. This paper reviews several models of quality improvement. The discussion begins with a list of some existing models. Afterwards the models are grouped into a model approach that surveys the impact of quality improvement on the stages in the production process. Analysis is carried out on several models in order to achieve a target of the desired quality. From the analysis and discussion on the models of product quality improvement, it was found that the commercial aspects need to be taken into account in improving the product quality.