It is a very important issue in business process improvement (BPI) to consider both customer and operation's need, identify crux of the whole process to improve, and insure the achievement. In this thesis, quality functional deployment (QFD) is employed to help to analyze and identify crucial process in BPI. A guide framework in BPI has been presented to answer the question what is the use of QFD in each BPI steps. Detail phases of QFD have been discussed in the context of BPI.BPI．To show the feasibility of QFD，a real e&se is also reviewed in the paper．ActuaI data and house of quality related to the case are shown and analyzed The esse gives a good example of how QFD framework and measures discused above can apply in a procurement process．At last limitations and three remaining problems of QFD in BPI is evaluated to point out the further study in this field．