The present invention discloses a battery assembly, an atomizer assembly, and an electronic cigarette. The battery assembly is connected to the atomizer assembly to form the electronic cigarette. The battery assembly includes a battery sleeve and a first connection member, and the atomizer assembly includes an atomizer sleeve and a second connection member. The first connection member and the second connection member are connected with each other. A portion of the first connection member contacting the battery sleeve and/or a portion of the second connection member contacting the atomizer sleeve protrude(s) to form an anti-slip structure, and Teflon paste configured to enhance a connection strength between the first connection member and the battery sleeve and/or enhance a connection strength between the second connection member and the atomizer sleeve is spread on a circumferential outer wall of the anti-slip structure.
