The embodiment of the invention provides a leaded alloy, an application and a manufacturing method thereof. The components of the leaded alloy are silver, lead and rare earth metals; the weight percentage of every component is 0.005-0.20 percent of the silver, 0.005-0.3 percent of the rare earth metals and the rest is the reductive lead; the sum of the weight percentage of all the components is equal to 100 percent. The invention also provides an application of the leaded alloy, namely, the leaded alloy is applied in a slab lattice of a valve-controlled storage battery of an electric bicycle; the invention also provides a manufacturing method of the leaded alloy. The leaded alloy is characterized by corrosion resistance, environment protection, and long cycle life for deep discharge, etc.