The invention relates to a linear induction motor which comprises a power bar, an H-shaped tube, a coil, a cylinder jacket, a perforated disc, a perforated casing and a bush. The power bar is arranged in the inner hole of the H-shaped tube on the outer side of which a coil is arranged. The power bar, the H-shaped tube and the coil outside of the tube are arranged together inside the cylinder jacket. The perforated disk is arranged on one end of the cylinder jacket. The invention belongs to a new type of power supply which can produce linear operation torque directly after electrifying. The invention provides a linear induction motor with the advantages of a easy transmission mode, high efficiency, low cost, low energy consumption and little noise. The invention can be applied in agriculture, transportation and machinery, chemistry, medicine, national defense, mines and automatic pipeline and the like fields that need linear power source.