An ultrasonic electronic cigarette atomizer, comprising a housing; a nozzle assembly is connected to one end of the housing; an air inlet channel, an air outlet channel and an ultrasonic atomization sheet are disposed in the housing;the air inlet channel, an atomization region of the ultrasonic atomization sheet and the air outlet channel are sequentially communicated; wherein an outlet of the air inlet channel is opposite to the atomization region of the ultrasonic atomization sheet; the nozzle assembly comprises a nozzle holder and a suction portion; the nozzle holder is mounted to one end of the housing; the suction portion is located on the nozzle holder and is communicated with the air outlet channel, an e-liquid chamber and an e-liquid guide cotton for communicating the e-liquid chamber with an atomization surface of the ultrasonic atomization sheet are disposed in the housing, a connecting sleeve is disposed in the housing, an air inlet tube is disposed in the connecting sleeve, the inner of the connecting sleeve is further provided with an inner sleeve and an outer sleeve sleeved on the inner sleeve, the e-liquid guide cotton is cup-shaped, the outer sleeve is provided with a second e-liquid passing hole, the air outlet channel is formed between the inner wall of the inner sleeve and the outer wall of the air inlet tube, and the top surface of the connecting sleeve is provided with an air outlet for communicating the air outlet channel with the suction portion; characterized in that the end of the suction portion that is close to the nozzle holder is provided with an air inlet communicated with the air inlet channel, the top of a side wall of the connecting sleeve is provided with an air passing hole for communicating the air inlet with the air inlet tube; the side wall of the e-liquid guide cotton is sandwiched between the inner sleeve and the outer sleeve; the connecting sleeve is provided with a first e-liquid passing hole, and the e-liquid chamber, the first e-liquid passing hole, the second e-liquid passing hole; the e-liquid guide cotton are sequentially communicated; the first e-liquid passing hole is disposed at the same height as the second e-liquid passing hole, and the nozzle assembly can drive the connecting sleeve to rotate relative to the side wall of the outer sleeve. an e-liquid chamber and an e-liquid guide cotton for communicating the e-liquid chamber with an atomization surface of the ultrasonic atomization sheet are disposed in the housing, a connecting sleeve is disposed in the housing, an air inlet tube is disposed in the connecting sleeve, the inner of the connecting sleeve is further provided with an inner sleeve and an outer sleeve sleeved on the inner sleeve, the e-liquid guide cotton is cup-shaped, the outer sleeve is provided with a second e-liquid passing hole, the air outlet channel is formed between the inner wall of the inner sleeve and the outer wall of the air inlet tube, and the top surface of the connecting sleeve is provided with an air outlet for communicating the air outlet channel with the suction portion; characterized in that the end of the suction portion that is close to the nozzle holder is provided with an air inlet communicated with the air inlet channel, the top of a side wall of the connecting sleeve is provided with an air passing hole for communicating the air inlet with the air inlet tube; the side wall of the e-liquid guide cotton is sandwiched between the inner sleeve and the outer sleeve; the connecting sleeve is provided with a first e-liquid passing hole, and the e-liquid chamber, the first e-liquid passing hole, the second e-liquid passing hole; the e-liquid guide cotton are sequentially communicated; the first e-liquid passing hole is disposed at the same height as the second e-liquid passing hole, and the nozzle assembly can drive the connecting sleeve to rotate relative to the side wall of the outer sleeve.