Atomizer and aerosol generating device

The utility model provides an atomizer and aerosol generating device, the atomizer includes oil bin casing, suction nozzle support, atomization subassembly, oil bin silica gel plug and oil bin bottom cover, the top center of oil bin casing sinks inward to form connecting pipe, the middle position of suction nozzle support is axially provided with suction pipe, the outer wall of suction pipe is provided with groove, the bottom cover is provided with the bottom cover, the bottom cover is provided with the bottom cover. The bottom end of the connecting pipe is provided with a protruding positioning block, and a suction pipe on the suction nozzle support is inserted into the connecting pipe on the oil bin outer shell, and the suction nozzle support capable of rotating by 45 degrees can drive the atomization assembly to rotate so as to adjust the working state and the closing state of the atomizer. The operation that a silica gel plug is plugged at the opening of an atomizer air channel in order to prevent oil lea