lithium-ion battery is a battery with intercalated lithium compound as negative electrode material and non-aqueous solution as electrolyte. It is often used as energy supply system for mobile phones, electric vehicles and other equipment. However, due to the instability of lithium and the flammable organic electrolyte, lithium-ion batteries are prone to fire in high temperature or after damage. The paper introduced the technology of aqueous zinc-ion battery and analyzes the merits and drawbacks of it. Aqueous zinc-ion battery is a battery with metallic zinc as negative electrode material. The ingredient of electrolyte is a solution with water as the main component. Compared with lithium-ion battery, it has many excellent characteristics, such as non-toxic, non-flammable, etc. When electronic devices such as smart wearable devices are in close contact with human skin, aqueous zinc-ion batteries can prevent the risk of human skin being burned when the battery damaged or toxic substances penetrating when the battery accidentally leaks. In addition, the high density, high specific energy, much fewer expend and other characteristics of aqueous zinc-ion batteries also increase the possibility that they will replace lithium-ion batteries as energy supply systems for electronic equipment in the future. This paper cites examples to show that the aqueous zinc-ion battery has a good prospect in the field of intelligent wearable devices and has a certain guiding significance for the choice of the energy supply system of intelligent wearable devices in the future.