Abstract: A rapid detection method for 9 herbicide residues in Ya'an Tibetan tea has been established. The sample was extracted by shaking with 0.5% acetic acid-acetonitrile, and the extraction solution was filtered and purified through a syringe packed with multi-walled carbon nanotubes (FeN-MWCNTs) and lipid and protein adsorbent (LPAS). The supernatant was concentrated to near dryness under a nitrogen stream and reconstituted in acetone. The sample was determined by gas chromatography-tandem mass spectrometry using matrix-matched calibration curves with external standard methodology. The results showed that the 9 herbicides had good separation under optimized conditions. Within the range of 0~200 μg/L, 9 herbicides had good linearity, and the determination coefficients (R²) were all greater than 0.999. At three spiked levels of 5, 10, and 50 μg/kg, the average recoveries of 9 herbicides in blank Tibetan tea were 80.25%~117.01%, with a relative standard deviation (RSD) of 2.56%~8.91%. The limits of quantification were 2~5 μg/kg, and the matrix effect ranged from 5.9% to 45.6%. The established method can meet the requirements for pesticide residue detection, and is suitable for rapid detection of 9 herbicide residues in Ya'an Tibetan tea.