We　adopt　a　multilayer　networks　approach　to　assess　how　network　structural　embeddedness　affects　corporate　technological　innovation.　Our　findings　indicate　an　annual　increase　in　both　single-layer　and　multilayer　networks,　although　adoption　of　the　latter　by　Chinese　listed　companies　is　comparatively　low.　We　found　that　structural　embeddedness　of　multilayer　networks　positively　impacts　corporate　technological　innovation.　By　reducing　uncertainty　within　the　internal　environment,　these　networks　bolster　technological　innovation.　Moreover,　such　embeddedness　notably　spurs　innovation　in　non-state-owned　companies　and　those　with　greater　internal　transparency　and　robust　external　oversight.　Our　analysis　reveals　an　intermediate　effect　where　structural　embeddedness　in　multilayer　networks　influences　innovation.　Our　work　provides　new　insights　into　enhancing　innovation　capacity　via　network　embeddedness　and　supplies　empirical　data　on　utilizing　network　resources　for　innovation.　We　also　offer　actionable　guidance　and　policy　advice　for　managers,　investors,　and　policymakers,　especially　relevant　amidst　economic　transformation　and　pursuit　of　technological　self-reliance　of　China.