The utility model discloses a voice prompt device for engine cooling water temperature and engine cooling water level based on a single-chip microcomputer. The voice prompt device comprises a storage battery on an automobile, a water tank, an auxiliary water tank of cooling water, an ignition switch and an instrument panel, wherein a water level sensor is arranged on the auxiliary water tank of the cooling water, a temperature sensor is arranged on the water tank, a water temperature and water level signal input unit, an information processing unit and a voice prompt unit which are connected in sequence are arranged on the instrument panel; the temperature sensor and the water level sensor are respectively connected with the water temperature and water level signal input unit; and the storage battery supplies power to the water temperature and water level signal input unit, the information processing unit and the voice prompt unit after being subjected to voltage reduction by the ignition switch. The voice prompt device for the engine cooling water temperature and engine cooling water level based on the single-chip microcomputer has the characteristics of convenience in preparation, simple circuit, low cost, high practical value and the like.