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 . <EOS>