The invention provides a method for measuring the content of 4,4'-bi(hydroxymethyl) biphenyl (4,4'-BHMBP). In the method, a capillary gas-phase chromatographic column is used for separating the 4,4'-bi(hydroxymethyl) biphenyl, and an automatic sample injector is used for quantifying the 4,4'-bi(hydroxymethyl) biphenyl by adopting an external standard calibration curve method. The method is characterized in that a fixed phase of the capillary gas-phase chromatographic column is 5 percent phenyl 95 percent polydimethylsiloxane, the length of the column is 15-60m, the inner diameter of the column is 0.2-0.5mm, the film thickness of the inner diameter of the column is 0.1-0.6mum, the initial temperature of the column is 60-150 DEG C, and the heating rate is 4-10 DEG C / min; and the sample size of the automatic sample injector is 0.2-5mul, the split ratio is (5:1)-(50:1), and the vaporization temperature is 230-270 DEG C. The method is simple, quick and accurate, is a more ideal qualitative and quantitative analysis method for measuring the content of the 4,4'-BHMBP and is suitable for the quality monitoring of 4,4'-BHMBP products.