The periodic Ag nanonetwork structure formed via localized surface plasmon resonance (LSPR) has potential applications in the deep-ultraviolet to near-infrared wavelengths. However, the relationship between the transmission and conductivity characteristics and the morphology of the nanonetwork structure remains to be further studied. In this paper, first, the effect of Ag nanoparticle morphology on the LSPR characteristics is theoretically analyzed using finite element analysis. Then, the effect of the deposited Ag coverage on the light transmission properties of the periodic nanonetwork structure is investigated. Finally, by establishing an equivalent resistance model, the resistivity and transmittance of the Ag nanonetwork structure are studied and analyzed. The results show that Ag nanonetwork structure with higher light transmittance and lower sheet resistance can be obtained when Ag nanoparticles with a certain thickness are deposited.