An air bubble removal device for removing air bubbles from a medium including a housing including an inner space for storing a predetermined amount of the medium, an introduction port through which the medium is introduced from the outside into the inner space, and a discharge port through which the medium in a state in which air bubbles have been removed is discharged from the inner space to the outside; and a support part coupled to the housing so as to maintain the housing in a state spaced a predetermined height from a bottom surface.