The invention relates to a strong wind preventing device of a wind power tower. The strong wind preventing device of the wind power tower comprises a tower body and a wind driven generator installed at the top end of the tower body. Multiple inhaul cables are arranged along the tower body. One end of each inhaul cable is fixed to the top end of the tower body, and the other end of each inhaul cable is connected with a gear linkage device. The gear linkage device is connected with a control system. The gear linkage device is controlled by the control system so as to control the inhaul cables to be folded or unfolded. When the inhaul cables are folded, the inhaul cables are hung down and folded along the tower body. When the inhaul cables are unfolded, the inhaul cables penetrate through a blade sweeping area of the wind driven generator. The bottom end of the tower body is provided with multiple strain measuring devices corresponding to the inhaul cables in number. Most of horizontal force caused by strong wind on the wind power tower is transferred into inhaul cables, and the stress level and collapsing probability of the tower are greatly reduced.