Based on the data of Taishan Radar(CD) and Jinan Radar(SA), the parameters of four long-life strong hail storms, which occurred on 13-14 Jun., 2016 and 11 Sep., 2016, are compared. The results show that as detected by the SA radar, DBZM values are greater than 60 dBZ, C-VIL values are over 50 kg〖DK〗·m-2, and the TOP values are above 9 km for the 4 strong hail storms at their mature stages. The DBZM, C-VIL, TOP values of 0613 Pingyin storm and 0613 Zhangqiu storm are similar, with DBZM greater than 64 dBZ (maximum value reaches 70 dBZ), C-VIL over 60 kg·m-2(maximum value is 80 kg·m-2), and TOP value above 105 km at storm mature stages. The parameters derived from SA radar and CD radar respectively have significantly differences. DBZM, C-VIL and TOP derived from SA radar are significantly larger than those from CD radar, especially for DBZM and C-VIL at storm mature stage. For 0613 Yanggu storm, 0613 Pingyin storm, 0614 Zhangqiu storm and 0911 Gaoqing storm at mature stage, the average difference of DBZM are 10 dBZ, 10 dBZ, 9 dBZ and 7 dBZ, respectively, and the average difference of C-VIL are 30 kg〖DK〗·m-2, 28 kg〖DK〗·m-2,29 kg〖DK〗·m-2 and 28 kg〖DK〗·m-2, respectively. The significant storm parameter differences are mainly generated by severe attenuation on CD radar electromagnetic waves by the large hail particles or the heavy rainfall, and it is also induced by the geographical environment and scan mode of the Taishan Radar.