A new type of whip antenna with multilayer radiation lobes structure was introduced. By setting up different numbers in parameters like radiation lobe layer number, radius, length, branch number, elevation angle and distribution of radiation lobe on the body of the 10 meters whip antenna, the research of their influences on antenna radiation performance were launched to choose the most suitable structure for whip antenna. The double loading and the broadband matching network for the antenna were designed and optimized, whose simulation results show that the gain and efficiency, compared with the existing broadband whip antenna, are greatly improved, the maximum growth of gain and efficiency are 3 dB and 5% covering the low frequency, which are 5 dB and 35% covering the high frequency,the warping of the pattern is also restrained to a certain extent，so a new structural design method is provided here to improve the existing broadband whip antenna.