The invention discloses a low-profile high-gain dual-polarized antenna, and the antenna is characterized in that the antenna comprises a feed network layer, a second dielectric substrate layer, a metal ground layer, a first dielectric substrate layer and a radiation layer, wherein the feed network layer, the second dielectric substrate layer, the metal ground layer, the first dielectric substrate layer and the radiation layer are sequentially stacked; the antenna also comprises four metal probes which vertically pass through the feed network layer, the second dielectric substrate layer, the metal ground layer, the first dielectric substrate layer and the radiation layer, and are electrically connected with the radiation layer and the feed network layer; the radiation layer comprises a circular metal paster and four T-shaped metal pasters which generate parasitic resonance; four first openings formed by the four metal probes on the radiation layer takes the circle center of the circular metal paster as the center, thereby forming four corners of a first square. According to the invention, the antenna employs the T-shaped metal pasters as parasitic resonance structure units, thereby enabling the bandwidth of the antenna to be effectively enlarged. Moreover, the T-shaped structures and the circular paster are located in the same layer, so the machining is easy, and the large-scale production is facilitated.