[Purpose/significance] The design of scale based on the theoretical model is critical for research paradigm transforming from qualitative to quantitative and it is also an effective step to test the management system effectiveness of a university library.[Method/process] According to the design principles and general steps of inventory, after the project analysis of questions test, screening and selection, this paper designed the final university library management system effective scale that consists of 4 dimensions and 16 items. Then it made a confirmatory factor analysis to test the construct validity, convergent validity and discriminated validity of the scale. Finally it introduced library management communication and communication environment as the criterion variable to test the increased validity and nomological validity of this scale.[Result/conclusion] Research showed that the construct validity, convergent validity, discriminated validity, increased validity, nomological validity of the scale all passed the test.