Abstract: The current study was implemented in the Shaab area in the Northeast of Baghdad (as an applied model) to follow the role of solid residues and street dust in the growing problem of increasing the percentage of dust suspended and falling in the atmosphere of the city of Baghdad. Through several tests to know the nature of synthetic, chemical and shape the size of solid residue particles and the dust of sidewalks left for long periods in the streets of the study area and compare these particles with dust particles suspended and accumulated in the atmosphere of the city using several techniques, including; Separating the dust particles of the street mechanically by means of the vibrator soil sieve into seven volume and weight categories, in order to determine the amount of the part that can become suspended and accumulated dust, especially the seventh category. Determination of the size, shape and content of the metal molecules of the seventh category by the technique of electronic microscope SEM. Determination of the quality of chemical compounds and their relationship to minerals in the molecules of this category XRD technology. Apply the same tests on the particles of dust suspended and accumulated which were extracted from the dust collectors and sedimentation cylinders of accumulated dust and accumulated, respectively. The results of the study showed a direct relationship between the components of the street dust and the nature of its particles, especially the seventh category with the components for the particles of the two kinds of dust suspended and falling. The mechanical separation technology showed that the diameters of the particles of this category were <53 μ and form about 45.3% of the total weight of the test sample (1 kg). The technique of the scanning microscope SEM has shown the great similarity in the shapes, diameters, colors and composition of most of the molecules of this class and the particles of the two types of dust mentioned (8-8, 75-7, 9.8-3.3) μ for pavement and high dust S and accumulator, respectively. Moreover, its mineral content is very similar in the three types of dust. The EDS technique showed the following elements in the first envelope of the molecule (carbon, silicon, iron, aluminium and molybdenum). The XRD technique also showed similarity the following compounds were detected in SiS₂ , SiO₂ , NiCx, CaCO₃ , CaO, V₃InO₇ , Ca1.5 and SiO3.5.xH₂O).