Abstract: Supplier network becomes an increasingly important source of value resources needed for the development of a manufacturing firm. However, many value resources in the supplier network do not exist in a transparent and concentrated form and their valuation will also vary from firm cognition differences. Therefore, the emphasis on firm's subjective initiative and cognitive heterogeneity makes supplier network insight especially important. In order to clarify the concept, content composition and measure of supplier network insight, this study, based on the relevant literature review and theoretical analysis, summarizes and extracts the main components of supplier network insight and develops its scale. This study also carries out factor analysis and empirical test on 332 valid sample data using SPSS and AMOS statistical analysis software, and further discusses the results from the perspective of network level and value resources. The results show that the developed scale of supplier network insight has good reliability and validity. Supplier network insight consists of five interrelated dimensions which are classified into three aspects. First, environment insight at network environment level mainly influences the determination of the type of resources required by the development strategy. Second, structure insight at network horizon level, including "network scale" and "network positioning", mainly affects the excavation process of network value resources. Third, relation insight at network context level, including "focus perception" and "interaction perception", mainly affects the acquisition process of network value resources. This study not only enriches the theoretical research of supplier management practice in the field of network cognition, but also provides some practical reference for firms to systematically understand and manage their supplier network.

Key words: network insight, network picture, network position, network resources, supplier network