The invention discloses a wire concentration device for a papermaking flat wire net. The wire concentration device comprises a supporting frame. A sliding frame is mounted at the upper end of the supporting frame and provided with a fixed plate. Square through holes are evenly formed in the fixed plate. A pressing rod is arranged above each through hole. A sliding rod is mounted in the middle of the fixed plate and evenly provided with cross rods. Sliding grooves are formed in the left portion and the right portion of each cross rod. A sliding column is arranged at the front end of each pressing rod. A first locating bolt is mounted at the front end of the sliding frame. An elastic block is arranged on the outer wall of the sliding rod in a sleeving manner. The wire concentration device has the beneficial effects of being simple in structural design, convenient to use and the like; guide on multiple strands of flat wires is achieved; the weaving quality of the flat wires is guaranteed; the processing efficiency of the flat wires is improved; and by means of cooperation of the pressing rods and the sliding rod, the flat wires are pressed, flat wire feeding is facilitated, and a large quantity of manpower and material resources are saved.