A handheld vacuum cleaner is provided, comprising: a dust-air separating unit, an airflow generating unit, a battery pack assembly, and a handle; the dust-air separating unit is provided with a dust suction port that defines a longitudinal axis extending along a front-rear direction; the airflow generating unit is provided with an air inlet side and an air outlet side, and the air inlet side communicates with the dust-air separating unit; an outer wall of the handheld vacuum cleaner is provided with an air outlet penetrating therethrough, the air outlet port and the air outlet side are connected by an air outlet channel, and the air outlet port is arranged at least partially exceeding forward beyond the airflow generating unit in the dust-air suction direction located along the longitudinal axis. When using the vacuum cleaner, the service life of the motor is lengthened and the user experience is better.