A qualitative and quantitative method for simultaneous detection of 7 potential presence of illegally-added flavorings, including trans-anethole, coumarin, estragole, lawsone, methyleugenol, pulegone and trans-cinnamaldehyde in tea samples. Tea samples were extracted with acetonitrile-water served as a mixed solvent, subjected to whirlpool oscillation and then diluted properly. After that, anhydrous sodium sulfate, primary secondary amine (PSA) and octadecylsiyl silica gel (C₁₈) were added to the solvent for purification. The centrifugation, the supernatant was filtered over a membrane and separated on a Kinetex C₁₈ column. These 7 target compounds were determined by UHPLC-MS/MS in MRM mode, and quantified utilizing a matrix-matched external standard method. The results showed a good linearity from 0.8~1 600.0 μg/L and the value of the corresponding correlation coefficients (R2) were all larger than 0.999. The values of limit of detection were 0.02~0.03 mg/kg, and those of limit of quantification were 0.05~0.10 mg/kg, the average recoveries were 82.5%~102.5%, and the intra-day and inter-day RSD values were below 16% and 18%, respectively. A survey of 100 commercial tea samples was conducted, showing that trans-anethole, coumarin and estragole were present in green and black tea with maximum concentrations of 65.0, 2.0 and 72.2 mg/kg, respectively.