The utility model discloses a pneumatic long and thin wire rod circular arc takes shape quick -wittedly, a serial communication port, including part, rotatable parts and the frame of taking shape. The cylinder passes through the rack and drives gear revolve, drives the main shaft and installs and rotate at main epaxial shaping parts, and through the mould of going for a stroll, the cooperation of quiet template and movable mould board is accomplished long and thin wire rod circular arc and is taken shape, the circular arc specification is gone for a stroll the mould specification through the change and is realized, the turned angle that the circular arc takes shape controls through the position of adjustment seat. The utility model provides a pneumatic long and thin wire rod circular arc takes shape quick -wittedly has that the arc shape uniformity is good, that the circular arc takes shape the angle is controllable, and that different specification circular arcs are changed is convenient, laborsaving, production efficiency is high, the cost is low, simple structure and convenient to use characteristics, can effectively solve the problem that long and thin wire rod circular arc is shaping.