The present invention relates to a method for preparing a coffee bean extract with low caffeine using low temperature extraction, and a method for preparing capsule coffee using the same. The present invention provides the method for preparing low-caffeine coffee, which allows a user to consume less caffeine and take a large amount of effective components beneficial to the human body even if the user drinks a small amount of the low-caffeine coffee, since the coffee bean extract is obtained by using low temperature extraction without thermally processing (roasting) coffee beans at high temperatures, and the effective components contained in raw coffee beans are not destroyed and a small amount of caffeine is included. The coffee bean extract prepared according to the present invention is obtained by using low temperature extraction without a high temperature roasting method, and is extracted using a solvent with excellent elution efficiency of the effective components, thereby having low loss of the effective components such as chlorogenic acid, protein and the like, and containing low caffeine content. Therefore, the coffee bean extract is effective for health and weight loss of modern people by reducing the intake amount of caffeine while allowing a large quantity of chlorogenic acid to be consumed with the small intake quantity. In particular, the capsule coffee obtained by encapsulating the coffee bean extract according to the present invention can prevent acidification, and thus has excellent long-term storability and enables the user to easily enjoy the coffee at home, in an office, etc.본 발명은 저온 추출법을 이용한 저카페인 커피원두 추출물의 제조 방법 및 이를 이용한 캡슐 커피의 제조 방법에 관한 것으로서, 커피원두를 고온에서 열가공(로스팅) 처리하지 않고 저온 추출법을 이용하여 커피원두 추출물을 얻기 때문에 생두에 포함된 유효 성분이 파괴되지 않고 카페인이 적게 포함되기 때문에 소량을 마시더라도 카페인은 적게 섭취하고 인체에 유익한 유효 성분은 다량 섭취할 수 있는 저카페인 커피를 제조하는 방법을 제공한다. 본 발명에 따라 제조되는 커피원두 추출액은 고온 로스팅 방법을 사용하지 않고, 저온 추출법을 사용하며, 유효성분의 용출 효율이 우수한 용매를 사용하여 추출하므로 글로로겐산과 단백질 등의 유효 성분의 손실이 적고 카페인 함량이 높지 않은 커피의
