Abstract: The basic processing of Fe-3Al₂O₃·2SiO₂ composite green by in situ coagulation in slip casting is reported.The influences of the solid content and coagulant in composite slurry on the properties of composite green body are investigated.The results show that the in-situ coagulation of composite slurry is facilitated by the coagulant.By changing the contents of solid,coagulant and buffer in composite slurry,the coagulation time and strength of composite green body can be adjusted.The composite green body is characterized by high density and homogeneity,sufficient ejection strength and little dimensional change rate.