Disclosed is an electronic cigarette in which a battery connector (4) at a connecting end of the battery assembly (1) and a vaporizer connector (5) at a connecting end of the vaporizer assembly (2) are connected via a twist lock joint, an electrode (41) of the battery connector (4) is electrically connected to an electrode of the vaporizer connector (5). The battery connector (4) is consisted of a tube body (42) and a protruding platform (421) formed on one end of the tube body (42) and having a cross-sectional area smaller than the tube body (42), wherein a circular cavity (422) is provided at the center of the protruding platform (421), two recessed L-shaped grooves (423) are radially and symmetrically formed in an inner wall of the circular cavity (422), a through hole (4221) is opened at a bottom of the circular cavity (422), positive and negative electrodes (41) of the battery assembly (1) are protruded out from the through hole (4221), an outer wall of the protruding platform (421) has a protrusion (4222) for snap fitting with a corresponding protrusion formed at an inner wall of one end of an outer tube (3) of the vaporizer assembly (2). The vaporizer connector (5) comprises a tube body (51) and a circular protruding platform (53) formed on one end of the tube body (51) and having a cross-sectional area smaller than the tube body (51), two symmetrically-arranged protrusions (52) protrude radially outward from an outer wall of the circular protruding platform (53), a center of the circular protruding platform (53) is provided with a vaporizer electrode assembly (6) comprising two electrodes (61), (62). After the battery connector (4) has been twist-lock connected with the vaporizer connector (5), the L-shaped grooves (423) of the battery connector (4) tightly engage with the protrusions (52) of the vaporizer connector (5), the positive and negative electrodes (41) of the battery assembly (1) are electrically connected to the two electrodes (61), (62) of the va
