Abstract: A series of Ti-20Zr-xCr alloy was prepared via non-consumable electric arc melting furnace.The effects of Cr element content on the microstructure and mechanical properties of as-cast Ti-20Zr-xCr alloys were studied by X-ray diffraction, optical microscope, scanning electronic microscope, microhardness test and compressive test. The results show that the phase of Ti-20Zr casted alloy is composed of α'martensite phase.With the Cr content increasing, the β phase stability and relative amount of Ti-20Zr-xCr also increase gradually, and the phase composition of Ti-20Zr-xCr casted alloys changes, i.e.α'→α'+β→α'+β+Cr₂Ti→β+ω.Ti-20Zr castd alloy has the obvious β grain boundaries, and the interlacing needle-like α'phases exist in the β grains. When Cr content is 8wt%, the alloy consists of complete β grains. Also, with the Cr content increasing, the yield strength and microhardness of Ti-20Zr-xCr casted alloys increase gradually. When Cr content is 2wt%, the yield strength, compressive strength, compressive strain and microhardness is 444 MPa, 1472 MPa, 32.88%, and 280 HV0.2, respectively. While, with Cr content increasing, the number of the dimples of compressive fracture surface decrease, and the fracture mode changes from ductile to brittle.