Aqueous zinc metal batteries (AZMBs) offer high safety, low cost, and environmental friendliness, making them a promising candidate for large-scale energy storage technologies. Although AZMBs have made significant progress, their practical application is still limited by dendrite growth and the hydrogen evolution reaction (HER), especially under low-temperature conditions. Here, we add a small amount of low-cost, efficient Na₂SO₄ as an additive to 5 m Zn(ClO₄)₂ low-temperature electrolyte. Through the preferential adsorption of Na⁺ ions on the zinc anode and their electrostatic shielding effect, we aim to inhibit the excessive localized deposition of Zn(H₂O)₆²⁺ ions. This approach effectively overcomes the dendrite growth and HER while maintaining the electrolyte's low-temperature performance. As a result, this work significantly improved the stability and reversibility of the zinc anode by adding a small amount of low-cost Na₂SO₄, providing a new strategy for enhancing the long-term operational stability of low-temperature AZMBs.