The invention relates to an ultrasound liquid atomizer comprising: a rigid piezoelectric transducer body (1) having a first end defining an opening and a second end, the inside of the piezoelectric transducer body (1) comprising a cavity for containing a liquid to be atomized and said body (1) further comprising a symmetry axis; a micro-perforated membrane (3) attached on said first end and covering said opening; a piezoelectric member (2, 9) adapted and provided so as to vibrate the piezoelectric transducer body (1); characterized in that the piezoelectric member (2, 9) is located towards said second end in order to vibrate the piezoelectric transducer body (1) in a direction parallel to its symmetry axis.