This invention relates to a kind of preparation method of E-cigarette liquid. The process is as follows. First, put the tobacco with the amount of 5-20% of E-cigarette liquid volume into the extracting tank and add the mixed solvent into the tank to soak the tobacco for 30-100 minutes. Then, heat the mixture up to 40-60°C and extract with warm soak for 2-8 hours. Filter the extract and add chocolate extractive with the amount of 1-10% of the E-cigarette liquid volume into the filtrate and stir it for 20-40 minutes. Then use propylene glycol or polyethylene glycol to complement the E-cigarette liquid volume with 100% planning preparation and stir uniformly to get the product. Letting the natural aroma elements of tobacco enter the E-cigarette liquid, this method makes the aroma and taste come from the tobacco and be closer to those of cigarettes, which can cater to the smoking feeling of customers and makes the time much longer for keeping the natural aroma in cigarette liquid.本發明涉及一種電子煙液的製備方法，秤取電子煙液量的5-20%的煙葉投入提取罐，將配製好的溶媒加入到提取罐中浸泡煙葉30-100分鐘，加熱至40-60℃，温浸提取2-8小時，過濾提取液，向濾液中加入電子煙液量的1-10%的可可豆提取物，攪拌混合20-40分鐘；再以丙二醇或聚乙二醇補足到100%計劃製備的電子煙液體積，攪拌混合均勻即得電子煙液。該法使煙葉中的天然香氣成分進入電子煙液，使電子煙液的香氣、口味基本是來自煙葉的，能更接近香煙的香氣，更能迎合消費者的品煙感覺，還能使進入煙液中的天然香氣成分留香時間更長。
