With the Total Electron Content (TEC)-based Electron Density Profile (EDP) inversion method,the phase data of Radio Occultation (RO) events of Constellation Observing System for Meteorology,Ionosphere and Climate (COSMIC) and Fengyun-3C (FY-3C) missions are processed.The inverted EDPs and ionospheric peak parameters are compared with the official products of the two RO missions,respectively.It is found that although good consistencies exist between the inverted results and the official products for both of the two missions,the consistency is more significant for COSMIC mission.Besides,for both of the two RO missions,the consistence between the inverted NmF2 values and the official products is better than that between the inverted hmF2 values and the official products.There are some differences in detailed inversion processes between the two RO missions.First,it is necessary to smooth the phase data before the EDP inversion process for FY-3C mission,which is not the case for COSMIC mission.Second,although TEC correction is effective for COSMIC RO EDP inversions,it is not a recommended practice in FY-3C EDP inversion process due to the non-availiability of enough non-RO period phase data in FY-3C RO mission.