Importantly, the temperature dependence was modulated under vibrational strong coupling. In particular, linear temperature dependence was observed for the CsCl aqueous electrolyte. Non-linear dependence was observed for KCl or HClO4. In most cases, a linear Arrhenius behavior was observed. This is because a simple model with a defined diffusion constant can characterize the states of ionic conductivity. The non-linear behavior might be due to the non-linearity in the local hydration around the ions.