The work aims to explore the effect of temperature and porosity on the compressive mechanical properties and deformation mechanism of closed-cell aluminum foam materials. The specimens with porosity of 84.3 % to 87.3 % were heated in the temperature range of 25 °C to 700 °C, and the quasi-static compression test was carried out. Under quasi-static compression conditions, the compressive stress-strain curves of closed-cell aluminum foam after heated at different temperature experienced three stages:elastic stage, plastic platform stage and densification stage. When the porosity decreased from 87.3% to 84.3%, the elastic modulus increased by 44.4 MPa, the yield strength increased by 0.39 MPa, and the platform stress increased by 0.94 MPa. At 25 °C, aluminum foam with porosity of 84.3% had elastic modulus of 141.4 MPa, yield strength of 4.25 MPa and platform stress of 4.75 MPa. When heating temperature was 500 °C, elastic modulus decreased to 128.0 MPa, yield strength decreased to 4.22 MPa and platform stress decreased to 4.51 MPa. The elastic modulus, compressive yield strength and platform stress of aluminum foam decrease with the increase of porosity. When the heating temperature is lower than 500 °C, the mechanical properties of aluminum foam materials change little, but the yield strength and elastic modulus decrease slightly. Under the compression load, the deformation and failure mode of aluminum foam shows that the plastic deformation of the pore wall and the collapse of the pore are firstly generated from the weak part of the aluminum matrix of the specimen, and the fracture compression zone gradually appears until the pore of aluminum foam completely collapses.