The invention discloses a headspace gas chromatography method for determining the residual quantity of an organic solvent in a glycine bulk drug. The method is implemented under conditions that a DB-624 capillary column and a hydrogen flame ionization detector are used, sample inlet temperature is 150 DEG C, the detector temperature is 250 DEG C, high purity nitrogen is taken as carrier gas with flow rate being 2.2 mL/min, the split ratio is 10:1, headspace heating temperature is 80 DEG C, and equilibrium time is 35 min; besides, glycine is easily soluble in water and the 12 solvents are soluble in water to a certain degree, so that an aqueous solvent is adopted. The method can be used for simultaneously determining the residual quantity of the 12 organic solvents including methanol, ethanol, acetone, isopropanol, acetonitrile, dichloromethane, n-propanol, ethyl acetate, tetrahydrofuran, cyclohexane, n-butanol and toluene in the glycine bulk drug, has the characteristics of being easyto operate, quick, sensitive and accurate in result, and provides reference for effectively controlling the quality of the glycine raw material and ensuring medication safety.