Establish a method for determining 54 volatile organic compounds in water using H-GC technology. Method: The headspace technique was used to extract and concentrate volatile organic compounds from water samples, and a HS-GC-FID analysis method was established for 54 volatile organic compounds in water samples. Result: The established method had a recovery rate between 81% and 121%, a determination precision RSD between 0.179% and 1412%, and a detection limit between 0103mg/L and 0119mg/L (SIM mode). Conclusion: The established method is simple, rapid, sensitive, and highly reliable.