This　study　empirically　analyzes　the　impacts　of　manufacturing　intelligentization　on　technological　innovation　using　panel　data　from　29　manufacturing　industries　in　China　for　the　period　2012-2019.　The　research　findings　indicate　that　manufacturing　intelligentization　has　significantly　positive　impacts　on　intra-industry　technological　innovation.　Moreover,　technological　innovation　exhibits　path　dependence,　in　which　prior　innovation　accumulation　is　advantageous　for　current　technological　innovation.　Furthermore,　the　spatial　Durbin　model　indicates　that　intelligentization　has　both　horizontal　and　vertical　technology　spillover　effects　on　technological　innovation.　Specifically,　the　intelligentization　of　horizontal-　and　forward-linked　industries　has　positive　impacts　on　technological　innovation　in　the　focal　industry.　Additionally,　technological　innovation　exhibits　significant　spatiotemporal　dependence,　as　manifested　by　the　negative　spillover　effects　of　prior　technological　achievements　in　other　industries　on　current　technological　innovation　in　the　focal　industry.