Safe solar water heater

The utility model discloses a safe solar water heater comprising a control center, a water-feeding pressurizer, a water-feeding electromagnetic valve, a temperature sensor, a water level sensor, a water pressure sensor, a heater, a warmer for a ribbon heater pipeline, a water outlet pipeline, a water circulating system, a water inlet tank and a water outlet tank, wherein in the water feeding process, the control center starts the water-feeding pressurizer so as to carry out pressurization and intermittent water feeding on cold water drawn into the water inlet tank under low water pressure so that the idle running and damage of a water pump caused by the long-term electrified running of the electromagnetic valve and the water pump can be avoided; and due to the adoption of the method of intermittently preserving the temperature of the ribbon heater pipeline, energy conservation and the long service life of a ribbon heater pipeline protector are ensured, and simultaneously a water pipe can be prevented from bursting under higher indoor and outdoor temperature difference. The power-off protection function prevents the possibly-occurred misoperation of the water heater after power off in the service process. A module arranged in the control center and used for presetting water feeding and heating start allows a user to select the time of solar heating and water feeding according to weather variations, thereby optimizing the energy utilization.