The work aims to establish the accelerated solvent extraction-gas chromatography-negative chemical ioni-zation-mass spectrometry (ASE-GC-NCI-MS) used to determine short chain chlorinated paraffins (SCCPs) in food contact plastic and paper products. Accelerated solvent extraction was used to extract SCCPs from food contact plastic and paper products. The extraction solvent was n-hexane-dichloromethane, the extraction temperature was 80 ℃, and the static extraction time was 10 min. Then, concentrated sulfuric acid was adopted to purify the extracted solution. SCCPs in the sample were qualitatively and quantitatively detected by gas chromatography-mass spectrometry under negative chemical ionization mode, full scan mode, and at 180 ℃ (ionization source temperature). In the range of 58.7%~64.3% (mass fraction) chlorine, the total response factor of SCCPs and measured chlorine content had a good linear relationship, with a linear correlation coefficient (R2) of 0.9765. The limit of detection was 20 mg/kg. The recoveries ranged from 86.3% to 95.3%, with relative standard deviations (RSD) of 3.3%~5.2% (intra-day) and 4.8%~8.1% (inter-day). Featured by convenient operation, good accuracy, high sensitivity and low detection limit, the proposed method can be used for the detection of SCCPs in food contact plastic and paper products.