Abstract: In order to meet the performance requirements of a key project, the theory and design method of microstrip antennas, Yagi antennas and dielectric embedded antennas were used comprehensively to design dielectric embedded special-shaped microstrip Yagi antennas. This antenna changes the leading vibrator of the traditional Yagi antenna from one to two, forming a “￥” shape, which is used to plan the beam direction and form a dual-beam; adding “fences” on both sides of the antenna patch to gather electromagnetic wave radiation. The antenna gain is improved, and a larger relative impedance bandwidth is also obtained. Tests show that at a center frequency in the Ku band, its absolute bandwidth is 1.9 GHz and its maximum gain is 3.92 dB. There are two main lobes on the E plane: at θ=15°, the lobe width is 11°; at θ=347°, the lobe width is 10°, which shows that the antenna meets the project requirements in performance and function, and plays a key role in the reception and transmission of signals in the project. In addition, the antenna also has broad application value in other communication, reconnaissance and interference situations.