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The possibility of using electron beam melting (EBM) technology to manufacture Ti600 alloy complex parts was explored by studying EBM-Ti600 alloy microstructure, strength at room temperature and fracture characteristics. The results show that the deposition microstructure of EBM-Ti600 alloy is basket weave microstructure. The α laths gradually become larger from top to bottom of the part and vast nanometer secondary phase particles precipitate in the middle of the part. Susceptible corrosion structure is also observed along α boundaries. The nanometer secondary phase particles in the microstructure of EBM-Ti600 alloy mainly include particles of Y2O3, α2, high temperature phases and low temperature phase of Si, and the precipitated phase of Si is mainly related with the Ti600 alloy composition and the EBM process. The strength of EBM-Ti600 alloy at room temperature is not uniform, the top strength is the largest, then the bottom, and the middle is the lowest, which is because of the α lath size and the different existing forms of Si. The tensile fracture of EBM-Ti600 alloy at room temperature is plastic fracture, which is mainly caused by part defects, intrinsic brittleness and not strong intergranular bonding.