The work aims to initially determine the risk level of the migration amount of styrene monomer in the disposable foamed tableware based on the migration detection of styrene monomer in the disposable foamed tableware. Taking 30 batches of disposable foamed tableware samples purchased in different distribution channels in Guangzhou as the research object, the migration amount of styrene monomer in the food simulants measured by headspace gas chromatography-mass spectrometry was studied after their contact with such four food simulants as water, 3% (volume fraction) acetic acid, 10% (volume fraction) alcohol and sunflower seed oil at 100 ℃ for 2 h. The cumulative daily exposure level of styrene monomer was calculated and the risk analysis was carried out combined with the expert evaluation method. Styrene migrated to all the four food simulants above. The migration amount of styrene in sunflower seed oil was quite high, followed by water, 10% (volume fraction) alcohol and 3% (mass fraction) acetic acid. The cumulative daily exposure of styrene monomer in all samples collected was less than 0.01 mg/(kg•d). Based on the calculation of the cumulative daily exposure of styrene monomer, the exposure is less than the safe intake specified by JECFA. Combined with expert evaluation results, the risk level of the migration of styrene monomer from the disposable foamed tableware is finally determined to be L (low risk).