A method for determining the content of menthol in a preparation of a traditional Chinese medicine composition, wherein the preparation of a traditional Chinese medicine composition is prepared from the following raw materials with the following parts by weight: Fructus Forsythia 200-300, Herba Ephedrae 60-100, rheum 40-60, Herba Houttuyniae 200-300, Flos Lonicerae 200-300, Radix Isatidis 200-300, Herba Pogostemonis 60-100, Rhizoma Dryopteris Crassirhizomae 200-300, Rhodiola rosea L. 60-100, menthol 5-9, Semen Armeniacae Amarum 60-100, Radix Glycyrrhizae 60-100 and gypsum 200-300, wherein the content of the menthol is determined according to the method as follows: 1) extracting the preparation of the traditional Chinese medicine composition using a non-polar solvent to obtain a test solution; 2) preparing a solution of menthol reference substance with a menthol concentration of 4.80 μg/mL or more, using the same non-polar solvent as that in step 1); 3) taking the solution of menthol reference substance and the test solution in an equal amount respectively, injecting the solutions into a gas chromatograph, and determining the contents of menthol, wherein the conditions for chromatography are: the chromatographic column is a weak polar capillary chromatographic column containing phenyl-methyl polysiloxane as a stationary phase, wherein the phenyl-methyl polysiloxane has a phenyl content of 1-10%; and the column temperature is increased according to the following temperature programming: initial temperature is 80-100°C, and is kept for 10-15 minutes, increased to 120-160°C at a rate of 6-10°C per minute, kept for 1.5-3.5 minutes, then increased to 240-300°C at a rate of 100-160°C per minute, kept for 5-20 minutes. 1) extracting the preparation of the traditional Chinese medicine composition using a non-polar solvent to obtain a test solution; 2) preparing a solution of menthol reference substance with a menthol concentration of 4.80 μg/mL or more, using the same non-polar solvent as that in step 1); 3) taking the solution of menthol reference substance and the test solution in an equal amount respectively, injecting the solutions into a gas chromatograph, and determining the contents of menthol, wherein the conditions for chromatography are: the chromatographic column is a weak polar capillary chromatographic column containing phenyl-methyl polysiloxane as a stationary phase, wherein the phenyl-methyl polysiloxane has a phenyl content of 1-10%; and the column temperature is increased according to the following temperature programming: initial temperature is 80-100°C, and is kept for 10-15 minutes, increased to 120-160°C at a rate of 6-10°C per minute, kept for 1.5-3.5 minutes, then increased to 240-300°C at a rate of 100-160°C per minute, kept for 5-20 minutes. the chromatographic column is a weak polar capillary chromatographic column containing phenyl-methyl polysiloxane as a stationary phase, wherein the phenyl-methyl polysiloxane has a phenyl content of 1-10%; and the column temperature is increased according to the following temperature programming: initial temperature is 80-100°C, and is kept for 10-15 minutes, increased to 120-160°C at a rate of 6-10°C per minute, kept for 1.5-3.5 minutes, then increased to 240-300°C at a rate of 100-160°C per minute, kept for 5-20 minutes.