A water-saving device for a faucet has a main body. A flow-controlling member and a movable flow-blocking member are mounted in the main body. The main body has multiple receiving holes that receive respectively multiple positioning balls. A driving member movably receives an outer surface of the main body. When the faucet is open, the flow-controlling member and the flow-blocking member facilitate a water flow that is adjustable and stable. A user pulls the driving member downwards for increasing the water flow as required. The positioning balls are mounted in the driving member. The flow-blocking member that is pressed by the water flow moves downwards. When the faucet is closed, the flow-blocking member restores to an original position, thereby automatically adjusting the faucet to a minimum water flow for next use and economizes the water usage.
展开▼
