We prepare hysteresis model that reproduces smooth hysteresis curves including minor loops from several experimental hysteresis loops. In this model, the distribution of susceptibility on the M‐H plane obtained from the experimental hysteresis loops is used. The hysteresis loop in the demagnetizing process is computed with this model, and found to converge on the original point of the M‐H coordinates. The computed hysteresis curves including minor loops agree well with the experimental results. In addition, the present hysteresis model is used for a numerical analysis of magnetic fields with the spatial network method. In this simulation, the magnetization and magnetic fields inside and outside an infinite magnetic cylinder in an external pulse field are obtained. The results are in fair agreement with theoretical results.