Integration between business processes and business rules is necessary for some applications which not only hold numerous business knowledge or policies but also need the intercommunication among some distributed and heterogeneous components. This paper proposes a main process and multiple bypass process to focus the integration occurring between a bypass process and a rule set. In order to hold the context of some external services decided by business rules, we design a special scope activity in the bypass process. Moreover, an architecture and an algorithm are provided to illustrate the interaction between a BPEL engine and a rule engine for the integrating BPEL processes and business rules.