The invention discloses a ridge type wet cultivation technology for paddy rice. The ridge type wet cultivation technology includes steps of (1), carrying out manure and rice rotation, sowing green manure in winters, to be more specific, planting astragalus sinicus or soybeans or oilseed rapes in slack seasons in winters, or returning straw to fields, combining land maintaining with land utilizing and biologically remedying the soil fertility; (2), forming ridges, directly sowing sprout rice, to be more specific, forming the ridges by means of water plowing and quantitatively directly sowing the sprout rice according to the ridges; (3), irrigating rice crops, to be more specific, managing water according to growth periods in a wet cultivation and dry management mode, controlling water consumption on the premise that physiological water requirements of the paddy rice are met, and only forming water layers for fertilization and pesticide application irrigation by the aid of natural rainfall instead of establishing water layers in the complete growth periods. The widths of the surfaces of the ridges range from 3 meters to 5 meters, and the widths and the depths of furrows respectively range from 0.3 meter to 0.5 meter. The ridge type wet cultivation technology has the advantages that lands can be maintained by the aid of the green manure, the paddy rice is subjected to ridge type wet cultivation, irrigation water consumption can be effectively controlled, cores of targets include production stabilization and cost economization and are supplemented by water conservation and land maintenance, accordingly, energy can be saved by the aid of the technology for the rice crops, environments can be protected by the aid of the technology for the rice crops, and the food and ecological safety can be guaranteed.