Abstract: The pollution of pesticide atrazine is very serious in China and has severely affected the ecosystem. In order to effectively remove atrazine from water and reuse adsorbents, a functionalized material Zr@AC was prepared by loading zirconium on activated carbon (AC) via solution impregnation and high-temperature calcination. The morphology and composition of the material were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared absorption spectrometer (FTIR) and porosity analyzer (BET), and the removal of atrazine by Zr@AC in water was also investigated. The results showed that: (1) The prepared Zr@AC had a large specific surface, many mesopores and micropores, and a lot of active sites, when the preparation conditions were 7.0% Zr⁴⁺ impregnating solution, impregnation time 9.0 h, calcination temperature 500 ℃, and calcination time 5.0 h. (2) The batch adsorption studies of atrazine on Zr@AC showed the maximum adsorption capacity was 93.8 mg/g at 25 ℃ when the solution pH was 4.0, the material dosage was 60.0 mg/L and reaction time was 90 min. (3) The kinetic studies showed that the pseudo-second-order kinetic model was suitable to fit the adsorption process, and the Freundlich isothermal adsorption model was better than the Langmuir isothermal adsorption model, indicating that chemical adsorption and multi-layer adsorption were the main mechanisms of the adsorption process. (4) After five cycles of adsorption experiments, the removal efficiency of atrazine by Zr@AC still retained 83.9%. In conclusion, Zr@AC composite material can be used as adsorbent to effectively remove atrazine in water, and it is a promising and reusable composite material.