An experimental research of a commercial hot rolled 7055-T7951 aluminum alloy thick plate on composition, microstructure details, uniaxial tensile properties at room temperature, and texture feature was carried out. Especially, a quantitative analysis for texture feature as well as their influences on the mechanical anisotropy was investigated carefully. The results show that there are little undissolved alloy compounds existed in the microstructure of this plate, possibly due to a low level of magnesium. The precipitations in grains mainly consist of η＇and η phases, which indicates a slight overaged status for the material. The uniaxial tensile properties along the 0°and the 90°to the rolling direction of the plate are almost equal and both superior to that along the 45°to the rolling direction. In addition, the strength indicators in central layer of the plate are all superior to corresponding parts in surface layer, and the tensile mechanical property anisotropy in central layer is more intense than that in surface layer. The texture near the center of the plate mainly consist of rolling type of Brass and S. While, the texture R with recrystallization type is dominant near the surface. The mean yield strengths along different in-plane directions through the thickness were studied and compared based on the Schmid’s law. The relationship between texture characterization and the nonuniformity of mechanical behavior was discussed finally.