Abstract: Root exudates play a key role in the rhizo-remediation of pollutants. It will be helpful to understand the mechanism of vetiver in remediating the atrazine-contaminated soil by investigating the characteristics of vetiver root exudates and its effect on the removal of atrazine. In this research, pot experiments were carried out to characterize the vetiver root exudates subjected to 2 mg·kg^-1 of atrazine stress and assess atrazine removal efficiency in soil by adding real vetiver root exudates. The results show that 88 and 83 compounds were detected in the vetiver exudates of atrazine-unadded treatment (CKP) and atrazine-added treatment (ATP), respectively, including alkanes, alkenes, esters, acids, nitriles, ketones, amides, alcohols, and phenols, etc.; Compared with CKP, the number of alkanes reduced by 8.5% under atrazine stress, while the number of alkenes and alcohols increased by 5.5%, and 4.1%, respectively. Meanwhile, the relative concentrations of alcohols and phenols increased by 123.45% and 5.19% under atrazine stress (P < 0.05), respectively, while the relative concentrations of nitriles, ketones, acids, alkanes, alkenes, esters, amines and amides decreased. The atrazine removal in soil was significantly enhanced by vetiver root exudates (P < 0.05), which was 5.51%-16.99% higher than the control overall. The results suggest that vetiver might adapt to atrazine stress by modulating the number and relative concentrations of the root exudates, such as alkanes, alkenes, alcohols, and phenols. The results of the study can provide a reference for the remediation of atrazine-contaminated soil by vetiver root exudates.