Abstract: In order to reduce the difficulty of collecting and processing large numbers of basic data in LCA and improve the efficiency and reliability of the assessment,a life cycle assessment(LCA) software Life Cycle Analysis System V1.0 is developed based on Visual Basic.net platform.Furthermore,the biggest LCA basic database in China recently is integrated in this software and all the data can be calculated and processed automatically with a high flexibility,which is suitable for all kinds of flexible evaluated system to shorten the assessment period and promote the application of LCA method in practical production.