"A first step to prescribing the right medicine is to recognise the cause of the sickness. Extreme monetary easing, in my view, is more cause than medicine," Rajan said at Brookings Institution function in Washington.
"The sooner we recognise that, the more sustainable world growth we will have," he said.
Rajan also reiterated his call, first made at the G20 summit in Sydney in February, for more coordinated monetary policy actions between advanced and emerging economies so as to avoid the spillover effects.
He also quoted IMF's own Jonathan Ostry and Atish Ghosh, who argued that impartial international policy assessments by multilateral entities could be suspected of bias.
"When source countries move to exit unconventional policies, some recipient countries are leveraged, imbalanced, and vulnerable to capital outflows," Rajan said.
He said as investment managers anticipate consequences of the future policy path, even a measured pace of exit may cause severe market turbulence and collateral damages. "The more transparent and well-communicated the exit is, the more certain the foreign investment managers may be of changed conditions, and the more rapid their exit from risky positions," he said.