<p>TiAl-based alloys have been extensively investigated as promising structural materials for aerospace and automotive applications. However, their intrinsic brittleness and inadequate formability severely restrict practical manufacturing implementation. This study addresses these limitations through the incorporation of 4 wt.% AlCoCrFeNi high-entropy alloy (HEA) particles into Ti-47Al-2Cr-2Nb via powder metallurgy. Systematic hot compression tests were conducted on the single TiAl alloy (Ti4722) and HEA-reinforced composite (Ti4722-4HEA) across 800 ~ 1000 °C with strain rates of 1 × 10^-1 s^-1 ~ 1 × 10^-3 s^-1. The results Ti4722-4HEA exhibited lower flow stresses than Ti4722 under all conditions. Processing maps were constructed using the dynamic materials model (DMM) at true strains of 0.2 ~ 0.8, revealing that instability regimes predominantly concentrate in low-temperature and high-strain-rate regions, with Ti4722-4HEA exhibiting broader hot processing window than Ti4722. Based on the morphology observation of the compressed specimens, the optimal hot processing windows for Ti4722-4HEA are within 955 °C ~ 1000 °C and a strain rate of 1 × 10^-2 s^-1 ~ 1 × 10^-3 s^-1. Finally, the hot deformation behavior of Ti4722-4HEA during the hot processing was analyzed and discussed. The introduction of HEA promoted synergistic deformation, reduced stress concentration, and the role of HEA in refining the matrix grain size enhanced the hot processing performance of TiAl matrix composites.</p>