The utility model discloses a high intermodulation ceiling antenna, its characterized in that, it includes antenna house, radiating element, reflection base plate, short circuit piece and coaxial connector, radiating element is the integrated into one piece structure, including cone part, cylinder portion and the circular arc portion that from the bottom up set gradually, be connected with at least three short circuit piece between radiating element's cylinder portion and the reflection base plate, the short -circuit connection piece is gone out by the reflection base plate direct tension preparation. The utility model discloses simple structure is guaranteeing under electric property and no difference's before the prerequisite, has improved the third order intermodulation of antenna, optimizes the production operation, reduce cost, and the uniformity is high, is fit for production in batches.