Improving the control of blasting near mining excavation can reduce a damage of blasting vibration effect to mining excavation. At Nanfen iron mine, the practice in blasting was that the priming system, the charging structure, the blasthole diameter and the parameters of blasthole grid were changed to control a quantity of explosive priming at the same time so as to reduce a damage of blasting to the near-by mining excavation. A detail introduction to many measures taken to reduce the blasting vibration is made.