Disclosed is a purification and recycling system for exhausted gas for activated carbon production, comprising an absorber, which comprises an absorber body having a cavity, a gas inlet, a gas outlet, a feed port and a discharge port, and also comprises belt conveyor disposed in the cavity and connected with the feed port and the discharge port, for conveying raw material for activated carbon production between the feed port and the discharge port; and further comprising a feed hopper, disposed at the feed port, for storing the raw material for activated carbon production; a limitation device, disposed on the absorber body and placed in the cavity, for coordinating with the belt conveyor to limit thickness of the raw material for activated carbon production on a belt of the belt conveyor to 500-550mm; a pipeline with one end communicated with the gas inlet and the other end communicated with an exhausted gas outlet of an activated carbon production equipment; two heating devices, one of which is disposed at o
