The invention belongs to a single-feedback fluidic sprinkler and a sprinkling method, belonging to the field of agricultural water-saving irrigation. The single-feedback fluidic sprinkler comprises a rotary driving plate, a fluidic element, a current stabilizer, a sprinkling body, a hollow shaft and a shaft sleeve, wherein the rotary driving plate is connected to the least significant end of an oblique side flow wall of a jet exit. When the single-feedback fluidic sprinkler sprinkles, water current enters the sprinkling body from the hollow shaft, reaches a sprinkling nozzle through the sprinkling body, subsequently enters the fluidic element, and forms jet flow in a jet flow space; wall-attached water current intermittently deflects under the pressure action of a feedback channel, so that the water current performs switching flow between a straight side wall and an oblique side wall according to a certain frequency; and the rotary driving plate is intermittently impacted, so that a sprinkling head is driven to rotate together with the hollow shaft along the shaft sleeve, and the sprinkling head sprinkles along the circumference. The single-feedback fluidic sprinkler and the sprinkling method disclosed by the invention have the characteristics of simple structure, high reliability and durability, low manufacturing cost, convenience in mounting and using and the like, and are suitable for meeting the demands of various sprinkling irrigation systems for field crops, forage, vegetables, forests and fruits, flowers and the like.