摘要:Agent-oriented software engineering (AOSE) systems are often distinguished from each other based on intelligence,autonomy,and reasoning. In this recpect,agent methodologies aim to covering all important components needed to build software systems. The success of agent methodologies depends on the development of all the necessary processes within different software stages,such as analysis,design, implementation,testing and maintenance. This work introduces a comparative study of agent approches with the purpose to asseses and compare the development lifecycle processes of four different wellknown AOSE methodologies,ADELFE,PASSI,Gaia and O-MaSE to define the similarities and differences between them. We can conclude that,the development of standard agent approach that supports Multi-Agent Systems (MAS) based has become an urgent need.