Abstract: For the multiple projects scheduling problem,a modified genetic algorithm with schedule generation scheme is put forward based on other researchers'effective meta-heuristic approaches.The contrast with other meta-heuristic approaches,it is a satisfying model in average project delay and optimal solutions.The modified genetic algorithm is superior to other algorithm on multiple projects scheduling problem with different network complexity and resource distribution,for it synthesizes optimum priority rules.

Key words: resource constraint, multiple projects scheduling, modified genetic algorithm