The invention discloses a device for leaching essential oil of a camphor tree and application. The device for leaching the essential oil of the camphor tree comprises an extracting tank (2), a mixing pipe (3), a pump (6) and a charging opening (9), wherein the mixing pipe (3) is fixedly arranged on the central axis of the extracting tank (2) through mixing pipe supporting rods (3b); a sealing cover at one end of the extracting tank (2) is provided with a spray nozzle (8); the other end of the extracting tank (2) is provided with a blocking cover (1); the spray nozzle (8) is communicated with a discharge opening of the pump (6) through a circulating pipe (7) provided with a heater (5); a feeding opening of the pump (6) is connected with another port of the extracting port (2) through the circulating pipe (7); the upper part of the extracting tank (2) is provided with the charging opening (9); the bottom of the extracting tank (2) is also provided with a discharging opening (4). The device provided by the invention has the advantages that the structure is simple, the design is reasonable, the energy consumption is low, the cost is low, the extraction rate is high, and the like, is applicable to the extraction of the essential oil of camphor tree and effective ingredients of other plants, and has wide application value.