Midnight-midday ebb flow alarm clock

The invention discloses a midnight-midday ebb flow alarm clock which can tell the most active meridian of the twelve human body meridians at each hour and remind people of having a rest, curing (particularly acupuncture and moxibustion) and exercising according to the laws of the meridians at each hour, thereby achieving the optimal health preserving effect. The conventional clock can only display the time and doesn't have a midnight-midday ebb flow prompt function, wherein the midnight-midday ebb flow actually is the human body biological clock earliest found by Chinese. The midnight-midday ebb flow alarm clock comprises two parts and is provided with a 'digital display clockface', with a hour display area and a meridian name display area respectively arranged on the inner ring and outer ring of the hour number; a numerically controlled board and a display system are configured on and in electrical connection with a travel-time mechanism of the clock machine, forming a novel 'clock machine'; and after the ho