Ti-W composites with different W additions were prepared by spark plasma sintering technique and their phase composition, microscopic morphology, mechanical property, and fracture morphology were investigated. The results show that W element can refine the particle size of composite powder and promote the interfacial bonding. The relative density of Ti-W composite with 5at% W addition content increases from 92.33% (pure Ti) to 98.49%, the microhardness increases from HV_0.5 315 to HV_0.5 740. The compressive strength of Ti-W composites is also significantly improved, and the compressive yield strength of Ti-W composite with 25at% W addition content (Ti-25W) is as high as 2267 MPa. When the W content is lower than 20at%, the lamellar α/β-Ti phase and precipitated nano-martensite play a major role in strengthening; when the W content is 25at%, the unsolidified W particles and W-rich solid solution play a role in particle strengthening and solid solution strengthening.