PURPOSE: A method of extracting mandarin oil and pectin from sweet orange peels is provided to reduce an energy source and a fabrication cost thereof and simplify the fabrication process thereof. CONSTITUTION: The citrus rind of a fruit is smashed in 3~10mm particle size. Water is added to the crushed citrus rind and the citrus rind is extracted in vacuum state after heating for 3-15 minutes in a microwave reactor. Filtrate is mixed to organic extractor for 3-5 minutes, and mandarin oil of yellow color is obtained by distilling upper liquid at 80-85°;C for 30 minutes. Hydrochloric acid and alcohol are added to and mixed with pectin concentrate for 5 minutes and filtered.본 발명은 대량의 에너지원을 절감할 수 있으며 생산원가를 낮추고 공정흐름을 간소화하며 회수율을 높여주고 마이크로파 보조기술을 이용하여 감귤 류(감귤, 레몬, 유자 등) 과피에서 만다린 오일과 펙틴(pectin)을 종합 추출하는 방법이다.