The invention discloses a fan. The fan comprises a base used for producing base airflow; a nozzle is provided with an internal channel used for receiving the base airflow; the nozzle is annular; the annular nozzle is provided with an opening for air to pass; an air outlet gap is arranged on the nozzle; the base airflow is emitted through the air outlet gap; the base airflow emitted through the air outlet gap sucks external air to form an airflow; and the air outlet gap is delimited by two inner side surfaces. A plurality of connecting sections are arranged in the air outlet gap for connecting with the two inner side surfaces of the air outlet gap, and the connecting sections and the two inner side surfaces are an integrated whole; and the distance in the narrowest position between the two inner side surfaces of the air outlet gap is 0.3 to 5 millimeters. As the plurality of the connecting sections are arranged in the air outlet gap for connecting with the two inner side surfaces of the air outlet gap, and the connecting sections and the two inner side surfaces are an integrated whole, the air outlet gap is always kept to be in a set width, relative displacement of the two inner side surfaces, which is likely to be generated during the processes of manufacture and operation, is avoided, the air outlet of the fan is reliable, and the performance of the fan is more ideal.