In conclusion, we have demonstrated the potential of vibrational strong coupling to modify ionic conductivities. The observed modifications in ionic conductivity were found to be dependent on the ion radius, leading to alterations in the nature of hydration from structure-breaking to structure-making of the hydration networks. The formation of polaritons can effectively modify the dynamic hydration network, resulting in significant enhancements in ionic conductivity. Additionally, we proposed that the entropic term in hydration plays a role in the modification of ionic conductivity. The utilization of polaritons opens up new possibilities for exploring the chemical space and designing innovative emergent fields.