Considering the application of WCu alloy at elevated temperature, hot compression was applied on WCu alloy and W skeleton to analyze the microstructure and mechanical behaviors at different temperature and strain rate. The results show that the stress-strain behaviors of WCu alloy is affected mainly by the temperature, the sintering necks disappear mostly after hot compression, and the plastic flow of WCu alloy appear at 300℃ while W particles are mostly homogeneous approximately at 900℃. In addition, the strength of W skeleton is reduced slightly at high strain rate, round grains and cracking appear at the substructure of W particle under different strain rate.