The invention discloses a vegetation concrete ecological slope protection and an automatic maintenance method. The ecological slope protection comprises a slope body, an automatic grid type micro-irrigation system and a rainwater collection system, wherein the slope body is provided with an anchoring structure, an iron wire net, base layer vegetation concrete and surface layer vegetation concrete; the automatic grid type micro-irrigation system comprises a water tank, a second water pump, a water pressure sensor, a humidity sensor, a water level gauge, a micro-irrigation net unit, a main pipe and a controller; the rainwater collection system comprises a sedimentation tank, a water tank, a slope surface drainage system and a first water pump; rainwater is discharged into the sedimentation tank; and the first water pump is used for pumping water in the sedimentation tank into the water tank. The automatic maintenance method comprises the following steps of: cleaning the surface of a slope surface, measuring and paying off, mounting the automatic grid type micro-irrigation system and the rainwater collection system and the like. By adopting the vegetation concrete ecological slope protection and the automatic maintenance method, the technical problems that plants are difficult to grow and survive on the surface of carbon rock by a traditional slope protection method, the anti-rain-washing capability is poor, and soil dressing on the surface layer of the slope surface is easy to peel off or is lost along with surface water, and vegetation on the slope surface is automatically maintained are solved.