Soil contamination with petroleum compounds is one of the most common environmental problems in recent decades. In some cases, these compounds are also known as modifiers of soil physical and chemical properties. This study was conducted to investigate the role of sugarcane and its biochar residues on some physical and mechanical properties of soil and detoxification of petroleum hydrocarbons. A factorial experiment was conducted in a completely randomized design with three replications in the greenhouse of Isfahan University of Technology. Green lodse Experimental treatments were at three levels of petroleum hydrocarbon pollution of 0, 4 and 8% by weight with three levels of 0, 5 and 10 tons per hectare of sugarcane bagasse or biochar and also in two conditions of corn planting and no cultivation. After mixing soil and biochar, physical parameters (index (SR), percentage of dispersible clay (DC), moisture characteristic curve (HEMC) Average Weight Indices of Aggregate mean weight Diameter (MWD), geometric mean weight Diameter (GMD), percentage of stable aggregate in Water (WSA), The ratio of drainage pore volume (VDPR) along with fast and slow wetting ...) and mechanical parameter (subsidence resistance) were determined by sampling soil. The results showed that petroleum hydrocarbons increased soil organic carbon from (0.60 to 1.85 mm), increased the average geometric weight of aggregate diameter by (2.95 mm) And the percentage of stable aggregates in water from destined (29% to 87.3%) and hydrophobicity. Significant positive correlations were obtained between hydrophobicity index (R), soil-water contact angle (?), MWD, GMD and WSA with organic carbon and the percentage of total petroleum hydrocarbons. Also, increasing oil pollution in the soil causes a relative reduction in the volume of drainage pores by a numerical value (0.8030-0.6990 mm) and the stability index in fast and slow wetting was statistically. Oil pollution, organic treatments and cultivation of corn plant increase microbial respiration from (0.11 to 2.5) mg of CO2 per kg and thus reduce the concentration of petroleum hydrocarbons and its destructive effects on the plant per for mance and increase Phytoremediation. Key words: Biochar, oil pollution, bagasse and collapse resistance.