The invention discloses a handheld 
vacuum cleaner host, which comprises a dust cup, an air duct connecting 
pipe, a motor and a 
handle, wherein one end of the air duct connecting 
pipe is connected to a floor 
brush and the other end of the air duct connecting 
pipe is connected to an air inlet of the dust cup, and an air outlet of the dust cup is connected to an exhaust duct of the motor; the motor is arranged on one side of the air outlet of the air duct connecting pipe; an included angle between the motor and the center line of the dust cup is 0-69 degrees; the 
handle is arranged on one side of the dust cup; the 
handle and the dust cup are detachably connected; and through 
suction force generated from negative pressure formed due to rotation of the motor, dust is sucked by the floor 
brush and enters into the dust cup along the air duct connecting pipe, the dust is separated and filtered by virtue of a 
cyclone in the dust cup, the dust is accumulated in the dust cup, and clean air, obtained through 
filtration, is discharged from the motor. According to the 
vacuum cleaner host disclosed by the invention, the dust cup is arranged at the upper part of the air duct connecting pipe in a 
transverse mode, so that the entire host is compact in structure; optimally, the included angle between the motor and the center line of the dust cup is 0-30 degrees, so that smooth operation of an air duct is guaranteed and the size of the host is diminished.