For comprehensive assessing quality level of metering automation terminal, the quality comprehensive assessment model is established based on improved analytic hierarchy process (AHP) and entropy method in the paper. The assessment index system is established from three aspects which are terminal quality before operation, operation quality, and maintenance quality in the model. The calculation method optimize the structure of the judgment matrix method, and combine expert experience and objective data information value. Horizontal comprehensive assessment of terminal in different periods of full life cycle management is realized in the model. The maintenance of various manufacturers terminal is mastered in time. Scientific quality assessment support is provided for professional departments such as marketing, materials management, and so on.