Biomass  activated  carbon  regeneration  technology  is  widely  used  for  environmental treatment  and  resource  recovery.  Various  regeneration  methods  are  available,  including  thermal, chemical,  microwave,  electrochemical,  biological,  wet  oxidation,  supercritical  fluid,  and  ozone regeneration.  Among  these  methods,  thermal  regeneration  is  the  most  widely  used.  Chemical regeneration is a simple and cost-effective option. Microwave regeneration allows for accurate control of  regeneration  parameters  and  quick  processing  of  spent  activated  carbon.  Electrochemical regeneration  can  be  operated  at  low  temperatures  and  has  good  regeneration  stability.  Biological regeneration technology is a more environmentally friendly option as it can reduce the use of chemicals. Wet  oxidation  regeneration  technology  can  treat  activated  carbon  with  less  loss  of  quality  and  lower energy  consumption.  Supercritical  fluid  regeneration  technology  uses  recyclable  and  non-polluting solvents.  Ozone  technology  is  another  option  for  regenerating  spent  activated  carbon  at  room temperature and pressure, which can be beneficial for the process economics. The article reviews these technologies  and  provides  an  analysis  of  each  method′s  regeneration  mechanism,  technical characteristics, and current research status.