Abstract: A decoupler of an exhaust pipe having spaces for absorbing various stresses caused by impact, vibration, heat distortion, or the like. The decoupler includes a corrugated bellows repeatedly formed with corrugations, a sleeve for protecting the bellows against exhaust gas, an outer cap for enclosing the outer side of one end of the bellows, an inner cap for enclosing the outside of the bellows, and wire mesh buffering members installed in spaces defined by the inner cap and the outer cap, to support the inner cap and the outer cap and to maintain air tightness between the inner cap and the outer cap. The outer cap has bending portions formed at the ends thereof, so as to maintain a gap between the outer surface of the inner cap and the end of the outer cap.