To provide a frame information input and output system for weaving machines, with which the total number of input means and output means is less than that of weaving machines and reductions in capital investment cost and power consumption cost can be attained when a plurality of weaving machines are installed.

This frame information input and output system for weaving machines, with which a plurality of weaving machines 2 have controllers 3 for memorizing pieces of frame information such as operation information, weaving condition information, etc., respectively, information terminal apparatuses 1 equipped with frame information input and output means 6 and 7 in number fewer than the total number of the weaving machines are installed, the information terminal apparatuses 1 display the frame information taken from an arbitrary controller 3 on the output means 6, the weaving condition information set by the input means 7 is sent to an arbitrary controller 3 and written, is provided.