The main construction content of HEPS project is composed of accelerator, beamlines and end stations, supporting facilities and so on. The main contents include:
1. The accelerator consists of a storage ring accelerator with the electron energy of 6 GeV, linear accelerator, transport lines, booster and so on.
2. in the phase I, 14 beamlines and end stations will be built.
3. The supporting facilities include the experimental building of the main ring synchrotron radiation light source, the auxiliary buildings, and the general facilities such as water supply, power supply, air conditioning, radiation protection and so on.