Abstract: The effects of processing parameters of semi-solid billets preparation, reheating temperature and holding time on the semi-solid slurry microstructure of AlSi7MgBe alloy by liquidus semi-continuous casting were studied. And the thixoforming feasibility of semi-solid AlSi7MgBe alloy was investigated by analyzing the microstructure and properties of formed parts. The results showed that the microstructure is mainly the homogeneously fine rosette-shaped grains. The microstructure of the billets reheated at 595°C and held for 15 min are near-spherical grains suitable for semi-solid thixoforming. The semi-solid thixoformed parts of AlSi7MgBe alloy are clean-cut, compact and able to fulfill themselves through thixoforming which improves the microstructure and properties. Compared with the liquid forged castings, the hardness of SSM (semi-solid metal) forged castings is increased by 20%.