Piezo-pyroelectric　coupled　nanogenerators　(PPCNGs)　capable　of　collecting　vibration　energy　and　thermal　energy　in　complex　environments　are　expected　to　provide　a　long-term　power　supply　for　multifunctional　electronic　devices.　However,　the　piezoceramics　as　the　core　of　the　PPCNGs　are　limited　in　their　coupled　power　generation　capabilities　due　to　low　thermal　conductivity　and　high　internal　resistance.　In　this　work,　it　is　proposed　to　construct　Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3/Ag　(NBT-KBT/Ag)　composite　ceramics　with　a　suspended　network　structure　by　introducing　a　low-melting-point　metal　Ag　second　phase.　The　network　structure　that　can　serve　as　a　transmission　path　effectively　reduces　the　scattering　of　phonons　and　carriers　in　the　ceramics,　improves　the　transport　efficiency,　and　achieves　the　dual　effects　of　increasing　thermal　conductivity　and　reducing　internal　resistance　in　the　composite　ceramics.　And　the　output　power　density　of　PPCNG　composed　of　the　optimal　components　is　736.4　nW/cm3,　which　is　4.7　times　that　of　the　unoptimized　virgin　components.　Furthermore,　the　optimal　PPCNG　possesses　the　capability　to　recognize　object　information　through　pressure　and　temperature　sensing.　This　work　reinforces　the　output　characteristics　of　PPCNGs　by　constructing　a　suspended　network　structure.　More　importantly,　the　simple　and　efficient　design　strategy　of　constructing　a　suspended　network　structure　is　expected　to　be　extended　to　material　modification　for　the　application　of　multifunctional　smart　electronic　devices.