The invention provides a tooth sheet positioner used for a wired IP board. The size of the tooth sheet positioner can be adjusted according to different sizes of the IP board, the operation is convenient, the application range is wide, the toothed sheet positioner comprises a fixed support, a first rear tooth connecting rod, a second rear tooth connecting rod, a front tooth connecting rod and a positioning frame, the fixed support comprises a panel and a connecting part, the middle hollow part of the panel is provided with a push key, the side face of the push rod is provided with a rack, the rear part of the push key is connected to a limiting mechanism, the side, far from the limiting mechanism, of the panel is provided with a first limiting block, the two ends of the top of the limiting mechanism are symmetrically provided with second limiting blocks, the upper brim of the top of the connecting part is provided with a fastening key, the groove part of the connecting part is provided with a fixed protrusion, the middle of the bottom of the fastening key is rotatably connected to the connecting part through a connecting pin, one end of the fastening key is provided with a sawtooth matched with the rack, the side, close to the connecting part groove, of the fastening key is provided with a limiting strip, and the tail end of the limiting strip is in contact connection with the fixed protrusion.