The stator of the motor consists of the support plate made from non-magnetic material, the cross-shaped magnetic yoke, four pieces of stator iron cores, four pieces of polyphase windings and the permanent magnet. The stator iron core setup above the four ends of the yoke, that are iron cores in left X, right X, front Y and back Y. The four pieces of polyphase winding installed in four pieces of iron core respectively are in left X, right X, front Y and back Y. The permanent magnet is fixed in the center of the magnetic yoke. The mover is composed of the cross-shaped magnetic support and four pieces of iron cores at the four ends of the magnetic support. X air gap and Y air gap are formed between the four pieces of stator iron cores and the four pieces of mover iron cores, which are above the stator iron cores respectively. Comparing with prior art, the invention solves the issues of large size, large volume of permanent magnet needed and low ratio of performance and volume.