The present invention relates to a method for producing a natural undiluted solution of lacquer tree and the natural undiluted solution of lacquer tree produced by the method, and more specifically, to a method for producing a natural undiluted solution of lacquer tree comprising the steps of: 1) collecting stems or branches from Rhus trichocarpa, natural Rhus verniciflua living 8 to 9 years after planting, from the first part of June to the last part of September 2) removing alien substances from the collected Rhus trichocarpa 3) cutting the alien substance-removed Rhus trichocarpa to the thickness of 1 to 10 mm 4) adding water to the cut Rhus trichocarpa in an amount corresponding to 5 to 10 times of Rhus trichocarpa to steam the cut Rhus trichocarpa using water vapor at 95 to 130 °C for 20 to 30 minutes 5) pressing the steamed Rhus trichocarpa to a pressure of 3 to 20 atmospheric pressures using a hydraulic pressure to obtain a natural Japanese lacquer undiluted solution of Rhus trichocarpa and 6) heating the Japanese lacquer undiluted solution to a temperature of 25 to 30 °C and stirring the heated Japanese lacquer undiluted solution to adjust color and transparency of Japanese lacquer, and the natural undiluted solution of lacquer tree produced by the method. The undiluted solution of lacquer tree according to the present invention is capable of expecting disease improvements even in the patients of a skin disease and other diseases by enabling the undiluted solution of lacquer tree to be helpful to the health of patients, and is free from discoloration. Paints using the undiluted solution are capable of exhibiting an effect of an always clean new house by preventing wood from being decayed and vitalizing wood colors as they are.COPYRIGHT KIPO 2016본 발명은 천연 옻나무 원액의 제조 방법 및 상기 방법으로 제조된 천연 옻나무 원액에 관한 것으로서, 보다 상세하게는 1) 식재후 8∼9년생의 자연산 옻나무인 개옻나무 (Rhus trichocarpa)를 6월 상순부터 9월 하순까지 줄기 또는 가지를 채취하는 단계 2) 상기 채취된 개옻나무에서 이물질을 제거하는 단계 3) 상기 이물질이 제거된 개옻나무를 1~10 ㎜ 두께로 절
