Barium gallium germanium selenium (BaGa2GeSe6, BGGSe) crystal is a novel infrared nonlinear optical material with excellent performance, which was discovered by Chinese scientists. Up to now, there is no report on large size single crystal growth of this crystal in China. In this study, polycrystalline BGGSe was synthesized successfully by using a self-made two-zone furnace with the amount of 400 g in one run. A high quality BGGSe single crystal with size of 30 mm×90 mm was grown by Bridgman-stockbarger method, which is the first in China. The successful fabrication of BGGSe crystal devices was also achieved after orienting, cutting, and polishing processes, which laid a solid foundation for the further application research of the crystal.