Abstract: Since the information fails to be expressed integrally in the agent organization model constructed by the single Aalaadin meta-model and it appears difficult in directly modeling with Agent Unified Modeling Language (AUML), a new modeling method (i.e. Aalaadin-AUML modeling method) combining the Aalaadin meta-model with AUML is presented after pointing out the existing mutual supplements in the both. Taking an agent organization of the distribution management in e-business for example, the modeling process is introduced based on this new method. As it is proved by practice, Aalaadin-AUML modeling method expends the ability of information expression and unifies the notion and understanding in the organization model of multi-agent system.