The Ionosphere GPS observation network had been established by SEPC at equatorial anomaly region in south China since 2005. The network is composed of five stations located at Fuzhou, Xiamen, Guangzhou, Nanning and Hainan. The network is monitoring the ionospheric scintillation and GPS-TEC situation with a time resolution of 1 minute once and 30 seconds once respectively. The five sites are just in northern equatorial anomaly, so they have favorable condition for the observation to study the TEC variations and ionospheric scintillation.