The invention is applicable to the technical field of electronic cigarettes, and provides an electronic cigarette tar with betel nut efficacy and a preparation method thereof, wherein the electronic cigarette tar comprises the following components by weight: 40 to 60 parts of glycerin, 10 to 25 parts of flavors and fragrances, 25 to 40 parts of propylene glycol, and 0.5 to 2 parts of arecoline. According to the embodiment of the invention, the flavors and fragrances, the propylene glycol, the glycerin and the arecoline are mixed, all the components can be well dissolved, uniform and stable dueto good solubility of the propylene glycol to the flavors and fragrances, and after the components are atomized, steam is sucked by a human body, so that the feeling of redness, heartbeat acceleration and the like caused by eating betel nuts is obvious. By replacing chewed betel nuts with the tobacco tar, harm to the oral cavity of the human body when people chew the betel nuts is reduced, and thus the risk that people suffer from periodontitis, oral cancer and other diseases due to long-term excessive chewing of the betel nuts is reduced; and moreover, a real betel nut feeling can be experienced in the electronic cigarette tar, and the electronic cigarette tar is popular with electronic cigarette users and betel nut enthusiasts.