The utility model discloses a seepage speed monitoring device used for monitoring falling frequency of seepage liquid drops. The seepage speed monitoring device includes a wireless signal transmitter, an optical transmitter and an optical receiver. The optical transmitter is arranged on one side of a falling path of seepage liquid drops while the optical receiver is arranged on the other side of the seepage liquid drop. Besides, an output terminal of the optical receiver is connected with an input terminal of the wireless signal transmitter. The seepage speed monitoring device can calculate seepage speed accurately in real time, so that real-time tracking of a seepage trend is facilitated. Manual tour inspection and tracking of seepage condition of equipment can be reduced, so that labor input is reduced and working efficiency is improved. Besides, human negligence is also avoided, so that reliability is improved. Moreover, the seepage speed monitoring device is simple and reasonable in structure, accurate in counting, low in manufacturing cost, convenient to mount and carry and available for recycling use.