This　paper　studies　the　processes　and　results　of　technological　innovation　diffusion　in　industrial　clusters　with　focal　firms　as　cores　by　network　simulation.　The　technological　innovation　diffusion　networks　in　these　industrial　clusters　with　three　important　kinds　of　communication　channels　have　close　relationships　with　final　product　systems,　a　new　kind　of　network　prototypes　for　them　is　brought　in,　and　its　construction　method　is　introduced　systematically.　The　technological　innovation　processes　can　be　divided　into　different　types　due　to　technical　innovation　ambiguity,　adoption　cost　evolution　mechanism　and　channel　power　effect,　a　series　of　scenarios　are　designed　in　which　different　technical　innovation　diffusion　processes　are　simulated　respectively　on　swarm　platform.　The　results　represent　the　effects　of　these　key　determinants　on　the　diffusion　scope　and　speed　as　well　as　their　relationships　with　the　network　structure.　Copyright　©　2012　Inderscience　Enterprises　Ltd.