BaGa4Se7 (BGSe) and BaGa2GeSe(BGGSe) crystals are novel infrared nonlinear optical materials independently developed by Chinese scientists. Because of the excellent comprehensive performance and the important application value in laser industry, they have attracted much attention at home and abroad. The progress of crystal growth and laser output of BGSe and BGGSe are summarized, and the future development is prospected.