The invention relates to a multifunctional water purification faucet device for hydraulic electrogenerating. The multifunctional water purification faucet device comprises a faucet body with a display screen, a water inlet, a water outlet and a flow guide cavity are formed in the faucet body, the water inlet and the water outlet are both communicated with the flow guide cavity, and a hydraulic electrogenerating device which generates electricity through impact of inlet water flowing is arranged in the flow guide cavity and electrically connected with the display screen; a filtering element is further installed in the flow guide cavity; the multifunctional water purification faucet device further comprises a switching mechanism for achieving inlet water outlet and raw water outlet switching; and the switching mechanism comprises a switching part and an operation part, a filter element water inlet and a filter element water outlet are formed in the flow guide cavity in a manner of corresponding to the filter element, a first runner and a second runner are arranged on the switching part, a raw water channel is formed by the water inlet, the water outlet and the first runner, and a water purification channel is formed by the water inlet, the second runner, the filter element water inlet, the filter element water outlet and the water outlet. The device has the functions of purified water outlet and raw water outlet, further has the functions of hydraulic electrogenerating and electronic displaying, and meets the environmental protection demand.