Air pump with self-cooling function

The utility model discloses an air pump with a self-heat-dissipation function. The air pump comprises a shell assembly, an electric driving assembly and an impeller. An air pump air inlet and an air pump air outlet are formed in the shell assembly, a main air duct is further arranged in the shell assembly, and the two ends of the main air duct communicate with the air pump air inlet and the air pump air outlet correspondingly; the electric driving assembly can drive the impeller to rotate; the electric driving assembly and the impeller are both contained and supported in the main air duct, and when the impeller rotates, airflow can be driven to enter the main air duct from the air inlet of the air pump and leave the main air duct from the air outlet of the air pump after passing through the electric driving assembly. The utility model mainly solves the problem of how to provide a heat dissipation structure for a motor, a driving circuit board and a battery in the air pump. On the premise that a heat dissipati