A negative ion electronic cigarette comprises an atomizer (1) and a battery component (2) that are electrically connected with each other. The negative ion electronic cigarette is characterized by further comprising a negative ion generation device that comprises a negative ion generator (14) and a control circuit, the negative ion generator (14) is arranged on an electronic smoke flow channel and is electrically connected with the control circuit arranged inside the battery component (2). According to the invention, the negative ion generator is arranged in an electronic cigarette, so high-concentration negative ions enter into human body through electronic smoke when people smoke the electronic cigarette, thus contributing to the removal of harmful substances in human body and assisting smoker in resisting smoke temptation and even quitting smoking. Meanwhile, when the addition of liquid tobacco tar is required, only the holder of the electronic cigarette of the invention needs to be opened and sealing cylinders are pulled out of injection holes so as to inject the tobacco tar into a tobacco tar cavity, which is convenient, fast, and difficult to cause tobacco tar leakage.
