The utility model relates to a water conservancy automatic rising anti -flood wall, the dyke inboard is arranged side by side along the river, including drive arrangement, locking mechanical system, stand, base, baffle, the base is the cavity cavity, and inner cavity of the base slides through vertical stand and is equipped with the baffle, the stand lateral part is equipped with the spout of corresponding baffle, inner cavity of the base is equipped with the drive arrangement of corresponding baffle, and drive arrangement includes waterwheel and assembly pulley, the waterwheel reciprocates along the spout through assembly pulley drive baffle, set up the baffle of liftable, the baffle was hidden in the anti -flood wall base non - flood season, when the flood arrives and reaches specific water level, the flood control baffle will be under the effect of waterwheel traction force automatic the rising, rise to stand upper portion on the baffle after, locking mechanical system's completion butt joint forms the fixed connection relation on the bayonet socket at baffle top and the stand, utilizes the baffle to stop flood, completion flood control task.