Belite calcium sulphoaluminate ferrite(BCSAF) cement was prepared mainly from clay, bauxite and calcium carbonate. The mineral composition, water requirement of normal consistency and setting time of BCSAF clinker were measured. Autogenous and drying shrinkage of BCSAF and reference cement paste and mortar were gauged. The effect of fly ash on the shrinkage of BCSAF cement paste was analyzed. Internal porous structure at early age of two kinds of cement was studied through low field nuclear magnetic resonance technique. The results show that autogenous shrinkage of BCSAF cement paste is larger than that of reference cement paste, but drying shrinkage is smaller due to different hydration products and internal porous structure. Addition of fly ash can effectively lower down autogenous and drying shrinkage of BCSAF cement paste. Fly ash can decrease autogenous shrinkage and drying shrinkage of BCSAF cement paste effectively. Drying shrinkage at 60d of BCSAF cement mortar is better than that of reference cement mortar.