To simplify a tentering apparatus and make exchange of a cylindrical member simple.

The tentering apparatus of a woven fabric arranged on the passage of woven fabric comprises a shaft extended in the width direction of the woven fabric, two pipes rotatably inserted into the shaft and arranged in the longitudinal direction of the shaft and a stopper for preventing movement of these pipes to the longitudinal direction of the shaft. The interval between the internal circumference of each pipe and the outer periphery of the shaft in a part on the center side in the width direction of woven fabric of the shaft is made smaller than interval between the internal circumference of each pipe and the outer periphery of the shaft in other part in the width direction of woven fabric of the shaft.