Provided is an aerator for an aquatic pond, comprising a base body (10) having a base (101) and buoyancy members (102) on the left and right sides of the base (101). The base (101) extends laterally above the two buoyancy members (102). A first fixing seat (20) is mounted on the left and right ends above the seat body (10) respectively. The outer sides of the first fixing seats (20) respectively have a second fixing seat (30) mounted on the base (101). The aerator also comprises a motor (50) having a rotating shaft (51), the two ends of which extend out of the motor (50). A first positioning plate (25) is extended downwardly from the left and right ends of the motor (50) respectively. The first positioning plates (25) are connected to the corresponding first fixing seats (20) such that the motor (50) is fixed at a required height. The aerator also comprises two impellers (70), the impellers (70) comprising a plurality of blades (71), and a shaft body (72) extending out of the centers of the impellers (70). The two ends of the rotating shaft (51) of the motor (50) are respectively connected to the corresponding shaft bodies (72). The shaft body (72) pivotally passes through a second positioning plate (25) respectively, and the second positioning plates (25) are connected to the corresponding second fixing seats (30) respectively.La présente invention concerne un aérateur pour un bassin aquatique, comprenant un corps de base (10) ayant une base (101) et des éléments de flottabilité (102) sur les côtés gauche et droit de la base (101). La base (101) s'étend latéralement au-dessus des deux éléments de flottabilité (102). Un premier siège de fixation (20) est monté sur les extrémités gauche et droite au-dessus du corps de siège (10) respectivement. Les côtés extérieurs des premiers sièges de fixation (20) ont respectivement un second siège de fixation (30) monté sur la base (101). L'aérateur comprend également un moteur (50) ayant un arbre rotatif (51) dont les deux extr