Abstract: Electromagnetic stirring (EMS) was applied to improve solidification structure of Cu-6%Fe composite. The results showed that spherical Fe-rich precipitates are formed in the copper matrix, and the distribution of the precipitates is inhomogeneous. The electromagnetic stirring decreases the size of Fe-rich precipitates and Fe enriched regions. After applying electromagnetic stirring, the Fe-rich precipitates are accumulated towards the centre of the casting and distribute with agminate tendency. The Fe-rich precipitates with larger size mainly locate at the centre of casting, whereas the finer precipitates are near the outer surface of casting. With electric current increasing, the grain size gradually decreases, and the precipitates are refined and distribute more uniform simultaneously. Upon a further increase, the precipitates gradually accumulate to the centre from outer surface of the casting. A rational electric current can make the Fe-rich precipitates tend to distribute uniformly. In this case, the optimal EMS current is about 100~200 A. Also an optimal EMS frequency can make the grain finer, and an appropriate frequency is about 20 Hz in this case.