To investigate the effect of environmental temperature on the mechanical response and reaction characteristic of reaction material aluminum-polytetrafluoroethylene (Al-PTFE) under the quasi-static compression. Al-PTFE specimens with a size of Φ10 mm×10 mm (the mass ratio of Al and PTFE was 26.5:73.5) were fabricated by cold pressing and sintering process. The quasi-static compression of specimens at different temperatures were conducted by a CMT5105 microcomputer controlled electronic universal testing machine and the stress-strain curves of materials at corresponding temperature were obtained. Results show that the mechanical properties and reaction characteristic of the material are affected by environmental temperature. When the temperature is low (-18, 0, 16 ℃), the material shows a brittleness, and its yield strrength is higher than 28.3 MPa, the failure strain is 1.31-1.49, the specimen is shear failure. With the rise of environmental temperature (22, 35, 80 ℃) the ductility of the material increases, the yield strrength is lower than 20.26 MPa, while the failure strain increases to 1.84-2.08. When the specimen is failed, the increase of deformation capacity makes the energy absorbed by the specimen release instantly along the opening crack formed by tranverse tensile stress, causing the severe reaction of the specimen.