A flow-guiding element adapted to a nebulizer having a nebulizing module includes a main flow-guiding body having a main flow-guiding channel, and an auxiliary flow-guiding body having at least one auxiliary flow-guiding channel. The at least one auxiliary flow-guiding channel is communicated with the main flow-guiding channel, and a longitudinal axis of the main flow-guiding body crosses a longitudinal axis of the auxiliary flow-guiding body. A nebulizer includes a nebulizing module and a flow-guiding element connected to the nebulizing module. The flow-guiding element includes a main flow-guiding body having a main flow-guiding channel and an auxiliary flow-guiding body having at least one auxiliary flow-guiding channel, in which the at least one auxiliary flow-guiding channel is communicated with the main flow-guiding channel, and the longitudinal axis of the main flow-guiding body crosses a longitudinal axis of the auxiliary flow-guiding body.
