To provide a kind of preparation method of electronic cigarette atomizing liquid to eliminate shortcomings of electronic cigarette atomizing liquid comprising weak aroma and taste and short time for keeping the aroma.

There is provided a kind of preparation method of electronic cigarette atomizing liquid, atomizing liquid by putting tobacco leaves with 5-20% of electronic cigarette atomizing liquid amount into an extracting tank and adding a mixed solvent into the tank and soaking the tobacco leaves for 30-100 minutes; heating the mixture up to 40-60°C and extracting it with warm soak for 2-8 hours; filtering the extract and adding a cocoa bean extract with amount of 1-10% of the electronic cigarette atomizing liquid volume into the filtrate and stirring it for 20-40 minutes; and complementing the electronic cigarette atomizing liquid volume with 100% planning preparation with propanediol or polyglycol, and stirring them until mix uniformly to get the product. Natural aroma elements of a tobacco leaf enter the electronic cigarette atomizing liquid by the method to make the aroma and taste of the cigarette come practically from the tobacco leaf, make the aroma further close to the aroma of tobacco catering further to the smoking feeling of customers and make the time much longer for keeping the natural aroma in the electronic cigarette atomizing liquid.