The experimental analysis and application of analytical prediction model was employed to study the thermomechanical behavior of PC/ABS blend. The tensile response to temperature variations was studied across a range from 20 ℃ to 150 ℃, at strain rates 1.25 × 10−2 s−1. Experimental results show the sensitivity of the PC/ABS blend to the temperature. With increasing temperature, the yield stress decreases significantly, while the Young's modulus decreases only slightly. The “Zhu et al.” model shows the best ability to predict the tensile response. However, it exhibits limitations in representing material behavior under high temperatures. An improvement of the “Zhu et al.” model was proposed by introducing a well-chosen temperature effect on two key parameters. Results show that the proposed HMHP model can effectively predict tensile behavior across different temperatures.