The present invention provides a preparation method of a rice bran extract for removing malodors and residual agricultural chemicals, comprising the following steps: a step in which dried rice bran is introduced in an alumina kiln having a heat resistant temperature of 1,750°C or higher a step in which the rice bran is subjected to direct combustion at 1,200°C or higher while a large quantity of oxygen is supplied a step in which inorganic minerals are produced in melted state after 20 minutes of the combustion of rice bran, and the combustion is continued until only the inorganic minerals remain a step in which residues in the kiln are rapidly cooled at a rate of 20°C per minute after one hour of the combustion a step in which the residues are cooled down to 60°C, and the resulting crystals are collected and pulverized into a powder having a diameter of 0.1 mm or less and a step in which 1 liter of purified water, 2 g of the crystal powder, and 2 g of edible citric acid are mixed in the above ratio in a pressure extraction tank, the pressure of the extraction tank is adjusted to 2 atm by injecting steam at 135°C, and after injecting the steam and reaching 2 atm, the pressure extraction tank is cooled to 1.5 atm or less, and reheated, and the above process is repeated three times in total to finally produce a rice bran extract. The present invention can be commonly used to remove various pollutants including malodors and residual agricultural chemicals, and thus can be widely applied as a unique technology. Additionally, the present invention is extremely useful in maximizing food safety by removing residual agricultural chemicals and using natural substance as the removing agent.COPYRIGHT KIPO 2017본 발명은 내열온도 1750℃ 이상의 알루미나 도가니에 건조된 쌀겨를 투입하는 단계 다량의 산소를 공급하며 1200℃ 이상의 온도로 상기 쌀겨를 직접 연소하는 단계 상기 쌀겨 연소 20분 경과 후 무기염류가 용융된 상태로 생성되는데, 상기 무기염류만 남을 때 까지 지속적으로 가열하는 단계 상기 가열 1시간 후 도가니 내 잔류물을 분당 20℃의 온도로 급랭하는 단계 상기 잔류물을 60℃까지 냉각 후 생성되는 결정체를 수집하여 지름 0.1mm 이하의 분말로 분
