Aimed at the problems of high concentration of organics, high salinity and degradation being difficult in atrazine pesticide wastewater, the technologies of ultrasound combining with Fenton and Fenton-like were applied in pretreatment of atrazine pesticide wastewater. The TOC removal in waters was investigated by ultrasound & Fenton and ultrasound & Fenton-like under neutral and acidity condition, comparing with ultrasound ， Fenton and Fenton-like alone. As a result, hybrid technologies had a better effect on TOC removal than ultrasound, Fenton or Fenton-like alone. In addition, a better TOC removal efficiency was found in ultrasound & Fenton systems than ultrasound & Fenton-like. Furthermore, ultrasound & Fenton technologies under acidic condition are suggested to be the optimal pretreatment methods for real atrazine pesticide wastewater.