The present invention relates to a method for preparing an herbal extract for eliminating harmful components generated by smoking. More particularly, the present invention comprises: a dehydrate formation step of forming a dehydrate by dehydrating Houttuynia cordata, Plantago Formosan, Cuscuta seed, lonicera flower, Solanum nigrum L, green tea, Glycyrrhiza uralensis, Aloe barbadensis, Calendula arvensis, and Panax notoginseng； a dehydrate mixing step of providing a mixed dehydrate by mixing the dehydrates formed in the dehydrate formation step； an extraction step of extracting a solution by putting, to a solvent, the mixed dehydrate formed in the dehydrate mixing step and heating the resultant； a filtration step of filtering the solution extracted in the extraction step； a solvent volatilization step of removing the solvent contained in the solution filtered in the filtration step to obtain an extract； a concentration step of concentrating the extract in which the solvent is removed in the solvent volatilization step； and a sterilization step of sterilizing the extract concentrated in the concentration step. The preparation method has an effect of reducing amounts of harmful components accumulated in the body due to smoking such as tar, nicotine, and dioxin. In addition, the preparation method provides an herbal extract which has an excellent antioxidant effect and safety against toxicity for administration by including an herbal ingredient and the sterilization step. The herbal extract may be added to various foods, thereby being simply administered and prepared in various formulations as well.본 발명은 흡연시 발생하는 유해성분 제거용 생약추출물의 제조방법에 관한 것으로, 더욱 상세하게는 약모밀, 차전초, 토사자, 금은화, 까막중, 녹차, 감초, 알로에, 금잔화, 삼칠을 건조하여 건조물을 형성하는 건조물형성단계, 상기 건조물형성단계를 통해 형성된 건조물을 혼합하여 혼합건조물을 제공하는 건조물혼합단계, 상기 건조물혼합단계를 통해 형성된 혼합건조물을 용매에 투입하고 가열하여 용액을 추출하는 추출단계, 상기 추출단계를 통해 추출된 용액을 여과하는 여과단계, 상기 여과단계를 통해 여과된 용액에 함유된 용매를 제거하여 추출물을 얻는 용매휘발단계, 상기 용매휘발단계를 통해 용매가 제거된 추출물을 농축하는 농축단계 및 상기 농축단계를 통해 농축된 추출물을 살균하는 살균단
