Abstract: Laser Campton Scattering-LCS source is a new type X-ray or Gamma-ray light source based on the interaction of the relativistic electron beam with the laser photon. It has the characteristics of high energy, short wave length, fast pulse and high peak brightness, and has become one of the important options of advanced light source technology in the world. This paper introduces the production principle of laser Compton scattering light source, the historical development in China and international laboratory, and the laser Compton scattering light source facility currently running and under construction internationally. The Shanghai Laser Electron Gamma source(SLEGS) is under construction in Shanghai Light Source PHASE II project, the research on nuclear physics, nuclear astrophysics, nuclear waste disposal and nuclear medicine applications that can be carried out on this gamma source. With the upgrade of the Soft X-ray Free Electron Laser(SXFEL) to a user facility, and the Shanghai HIgh repetition rate XFEL aNd Extreme light facility(SHINE)- Large-scale scientific facility of the 13th Five-Year Plan will be completed in the future. The gamma energy of the Compton scattering source in LINear ACcelator (LINAC) will reach the GeV energy. Ultra-short pulse, high polarization, high-flux laser Compton scattering light source will usher in new development opportunities. The study of nuclear physics, astrophysics, particle physics and applied basic research based on Compton Gamma source will also reach a new level.