Abstarct: The study of the removal of heavy mextals from contaminated soils is an important extensive research in the recent decades. Heavy mextals lead and cadmium are important since they are considered as potential danger to human and animals. It's required more attention to prevent the entry of these mextals to the food chain. These mextals are absorbed in different ways to soil and from there into the plants and eventually into the human body. In the recent years with the development of nanotechnology, this technology has been used for environmental engineering purposes. This study aimed to evaluate the possibility of removing cadmium from soil with the use of zinc oxide nanoparticles. To achieve this goal, ZnO was coated and stabilized by polyacrylic acid (PAA). The removal of cadmium from soil using nanoparticles was measured by a spectrophotometer. The results showed that zinc oxide nanoparticles has the ability of removing cadmium from the soil in large scale. The maximum removal of cadmium from soil achieved in pH=8.5, time= 720 min, the ratio of mass to volume=1 gram of soil in 200 ml of solution, and nanoparticle concentration= 1000 ppm. According to the results, the maximum amount of absorbed cadmium by nanoparticles from the soil was 92 percent. Therefore, zinc oxide nanoparticles can be used in remediation of the soil contaminated with cadmium.