The invention relates to an induction faucet with a tap water filtering function. The induction faucet comprises a main body and a water outlet and also comprises a filter mechanism, a scanning mechanism and a central control mechanism, wherein the filter mechanism comprises a supporting assembly, a filter element, a cover plate and two connecting assemblies; the supporting assembly comprises a second supporting rod, a first supporting rod, a lifting bushing, a third spring and at least two reinforcing units; the scanning mechanism comprises a shell, a protective cover, an induction device, asecond fixed bar, a driving assembly, a movable block, a slide block, a chute and an oscillating rod. According to the induction faucet with the tap water filtering function, impurities in tap water can be filtered through the filter mechanism, and the convenience of replacing the filter element is also improved, so that the practicality of the induction faucet is improved; by means of the scanning mechanism, the induction range of the induction device is expanded, so that the accuracy of the induction device which induces a human body is improved, and therefore, the practicality of the induction faucet is further improved.