The present invention relates to an apparatus for extracting defective beans using pressure, reducing a loss of a work force and time caused by which people extract defective beans in person, conventionally. The apparatus comprises: a main body storing defective beans a bean inlet adhered to an upper side of the main body a storing place where normal beans are stored a bean separation device separating the normal beans from the defective beans and a device assisting operation of the bean separation device.COPYRIGHT KIPO 2015압력을 이용한 결점두 추출 기계로, 종래의 사람이 직접 결점두를 검출 해내는 것에서 오는 노동력과 시간의 낭비를 줄여주는 효과를 얻을 수 있다.