Abstarct: Abstract: With the expansion of industry and the advancement of technology, the control and purification of various pollutants resulting from human industrial activities, from soil and air to surface water, has become an undeniable necessity. Due to their toxic and mutagenic effects, these pollutants pose a great threat to human health and other living organisms and the safety of the environment. Modified natural polymers can be highly effective in this regard. mextal-organic (MOF) molds with their unique structure, high specific surface area, regular porosity, adjustable structure, are considered as another promising choice for the removal of these contaminants. In this research, by using green synthesis and embedding the mextal-organic frxamework of ZIF-8 on natural starch polysaccharide, this polymer has been transformed into a hybrid nanocomposite with high efficiency to remove organic contaminants. The synthesized material was investigated as an adsorbent to remove the dye (malachite green) from the wastwater. Despite the very small amount of initial starch removal, the synthesized composite showed very good performance in removing malachite green as contaminants. In order to confirm the structural properties and characterization of hybrid nanocomposites, (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, (BET), (SEM), (EDS) and (Mapping) were performed. Parameters affecting the adsorption process including: adsorbent amount, initial concentration of dye solution, effect of pH of the initial solution and effective contact time in the adsorption process were evaluated at room temperature. To better understand and interpret the obtained data, we used three isothermal models of Langmuir, Freundlich and Tempkin. Three kinetic models of pseudo - first order, pseudo -second order and intraparticle diffusion model were used to investigate the kinetic mechanism of the adsorption process. Finally, we conclude that the removal of cationic dye (malachite green) follows the Langmuir isotherm (R2 = 0.96) and the second order kinetics (R2 = 0.9997). Also, the highest adsorption capacity obtained for nanocomposites was 833.3 mg /g. Due to the structure of the synthesized dye and composite and the information obtained, the mechanism of dye removal of malachite green with the resulting nanocomposite can be related to π-π stacking interaction, electrostatic interactions and hydrogen bonding between the synthesized adsorbent and dye molecules.