Electronic cigarette

An electronic cigarette comprising a battery rod, an atomizer and a connection structure provided on the junction between the battery rod and the atomizer, wherein the connection structure includes a first connecting piece and a second connecting piece;

• a buckle projects radially from an exterior sidewall of the first connecting piece;
• a receiving hollow, a guiding slot and a stop slot are defined in the second connecting piece;
• the receiving hollow is configured to hold the first connecting piece inserted;
• the guiding slot matching with the buckle is formed on an inner wall of the receiving hollow;
• the stop slot is in communication with the guiding slot;
• the second connecting piece includes a lower electrode which elastically abuts against the first connecting piece;
• when assembling the electronic cigarette, inserting the first connecting piece into the receiving hollow and moving it downward along the guiding slot until the buckle reaches the stop slot and having the first connecting piece press down the lower electrode, then rotating the first connecting piece so that the buckle enters into the stop slot and is locked.