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At present, with the development of the construction market, the project quality more and more becomes the focal point which the people pays attention, is relating the people life, property security, the construction enterprise survival and the development. In view of this tendency, this paper from the projects quality present situation inside and outside our country draws out the thesis.First, in the system analysis foundation, the paper emphasizes several principal aspects of quality control in construction stage as well as the application of the statistical analysis methods and the SPSS software in project construction quality control process.Second, the paper introduces the multi-attribute utility function theory in project quality control, establishes the quality control model, in which the time and the cost are taken into account, and in the network-based planning techniques foundation, uses genetic algorithms to solve the model, by which the most satisfactory policy-making plan and many other approximate satisfactory choosing plan can be obtained, the model has solved the contradictory question between the time, cost and quality control. It has the practical value; At the same time,the paper establishes the project quality fuzzy synthetical evaluate model based on the fuzzy set theory, this method may satisfy the multi-factors, the multi-stage judgment, it has considered all the influence factors, moreover , hightlights the important factor by matching various factors different weight coefficient, and keeps all the information of different levels in the process of calculation, it’s result can reflect the actual situation well.At last, in the paper, the model and the method above are utilized to the quality control in Changgang 1080m~3 blast furnace and 65 tons converters project, which has got the very good effect, and has the feasibility.
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