In this work the magnetic induction in grain orientated ultra-thin silicon steel sheets (with a thickness of 0.08 mm) was calculated by employing the crystal orientation distribution function and the formula for the anisotropy of energy for a single crystal of cubic symmetry. The incomplete pole figures of {110}, {200} and {112} were measured and the corresponding orientation distribution function was determined. On the basis of the texture data and the corresponding magnetic anisotropy energy, the magnetic induction in the ultra-thin silicon steel sheet was calculated. The calculation results are in good agreement with the experimental measurement.