The invention discloses a safe and reliable direct drinking water dispenser. The direct drinking water dispenser structurally comprises a human-
machine interface, an observing window, a water valve switch, a heating
protection system, a water falling pan, a water tank and moving wheels, wherein the water falling pan is mounted on the water tank, the human-
machine interface is mounted at the top end of the water tank, the observing window is assembled right below the human-
machine interface, the heating
protection system is mounted in the water tank and mechanically connected with the water valve switch, a gravity structure of a temporary
water storage structure is taken as a starting switch to trigger a pushing structure to push a movable pressing
block structure to press down a first contact plate, so that the first contact plate and a second contact plate make contact, a heating structure is powered on for heating, when water is used up, the temporary
water storage structure rises totouch an unidirectional outage starting structure to promote a
piezoelectricity disconnection structure to start to operate to downwards press the second contact plate, meanwhile, with rise of the temporary
water storage structure, related structures can gradually reset, the distance between the first contact plate and the second contact plate is enlarged, and automatic outage is realized.