Abstract: Keeping the time,cost,quality and resources in balance is the key factor of building the general objective in the engineering project scheduling,which is related to the success or failure of the whole project．Basic particle swarm optimization is easy to trap in local optima．In this consideration ,this paper presented the chaos particle swarm optimization algorithm,built comprehensive optimization model by establishing time,expenses,resources and quality objective functions,and used chaos particle swarm optimization based on priority rule to solve this model problems．Through an application example,the article also proved that compared with basic particle swarm algorithm,the chaos particle swarm optimization algorithm can solve the multi-objective optimization problems of this model more accurately and rapidly．

Key words: Project scheduling,Multi-objective,Multi-mode,Chaos,Particle swarm optimization