Composites with W particles as the reinforcement phase and Ti₇Zr_1.5VAl_0.5 high-entropy alloy (HEA) as the matrix were fabricated via hot isostatic pressing (HIP) sintering. The effect of W content on the microstructure, densification behavior, and room-temperature compression properties of the composites were systematically investigated using X-ray diffraction, scanning electron microscopy and electronic universal testing machine. The results indicated that the composite with W:Ti₇Zr_1.5VAl_0.5 of 1:1 (in molar ratio) exhibited the optimal comprehansive mechanical properties, achieving a yield strength of 1146 MPa and a plastic strain of 36%. As the molar ratio of W to Ti₇Zr_1.5VAl_0.5 increased, both the yield strength and plasticity generally showed a declining trend. At a molar ratio of 2:1, the yield strength and plastic strain decreased to 892 MPa and 16%, respectively. Concurrently, the dominant fracture mechanism transitioned from ductile to brittle with the increasing W content. The deterioration in mechanical performance may be attributed to several factors. First, the significant density difference between W particles and the HEA matrix promoted gravity segregation and particle agglomeration, which weakened the dispersion-strengthening effect. In addition, a higher W content led to an increased number of inherent pores on the W particle surfaces; these pores could not fully be eliminated during sintering and consequently reduced the overall densification of the composite. Furthermore, under external loading, such micro-pores could act as stress-concentration sites, facilitating the initiation and propagation of micro-cracks and ultimately inducing interfacial debonding between the matrix and the W particles, which resulted in fracture.