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This paper proposes a technique for analysis and testing BPEL-based web service composition using High-level Petri Nets. To illustrate how these compositions are verified, the relationships between BPEL-based web service composition and High-level Petri Nets is constructed. By analyzing the structure of web service composition based on BPEL, the corresponding HPN is constructed. The dynamism and occurrence are presented in HPN with guard expression with coloured token. After translation, the equivalent HPN of the web service composition based on BPEL can be verified on existing mature tool, and the related researches on HPN, e.g. testing coverage and reduction techniques that have been studied deeply, can be employed in testing of web service composition based on BPEL, optimized test case can be generated based on the HPN translated. An example is provided to illustrate the translation ruled and the automatic verify progress.