Intermetallic TiAl based alloys are a novel light-weight high-temperature structural material, with wide applications in aerospace and automotive industries. Electron beam melting (EBM) is the most novel technology for manufacturing TiAl alloys now. The principle and merits of EBM for TiAl based alloy components, as well as the latest research progress are reported. The present status of prealloyed powder is also reported. The obstacle of EBM of TiAl based alloys is analyzed and its prospect is forecast.