Cross-contamination experiments showed that S.Typhimurium can be transferred from cutting boards during food preparation to salad vegetables. Treatment with NaClO2 to decontaminate fresh produce was more effective than NaOCl. NaClO2 concentration at least 25 ppm was effectively killed highly contaminated on sliced cucumber, shredded cabbage and shredded carrot 2.0-2.8 log whereas destroyed bacterial cell only 1.6-1.7 log on sliced tomatoes. Using NaOCl 50 ppm reduced 1.0-2.4 log on salad vegetables. Although the concentration at 200 ppm was the most effectiveness but it causes off-flavor, off odor and soft texture. Treated low contaminated on salad vegetables with NaClO2 inactivated cell by 100% at concentration 25 ppm except on sliced cucumber. The results showed that similarly reduction when using the same concentration of NaOCl, except on shredded carrot. The study of survival of S.Typhimurium on unwashed cucumber and shredded carrot stored at 5 °C and 10 °C revealed that normal cell and stressed cell decresed for the time of storage. Stressed cells showed the ability to survive than normal cell when kept at 10 °C. Washing produces with NaClO2 50 ppm 15 min and storage at both temperatures indicated that this bacterium could not grow but be able to survive during storage since it was found positive after enrichment.