Abstract:  GNSS has been widely used because of its worldwide coverage and high accuracy measurements. Observing the ionosphere with signal of Globlal Navigation Satellite System (GNSS) has becomes an important way for ionospheric study. According to the design requirements of ionospheric Total Electron Content (TEC) and scintillation monitoring equipment based on GNSS signal, the overall design and detailed design of monitoring software for GNSS ionospheric TEC and scintillation receiver is given in this paper. Results can be taken as reference for development of ionospheric TEC and scintillation monitoring system.