A medical diagnostic apparatus having a height-adjustable table for animals according to an embodiment of the present invention includes: a table where an animal is placed； a support stand supporting the table such that the table vertically moves and adjusting height of the table to move the table close to a floor； an X-ray detector disposed under the table and coupled to the support stand to move with the table； and an imaging stand spaced from the table, connected to the support stand, and having an X-ray tube for radiating X-rays to the X-ray detector.
