The invention relates to a large-scale efficient energy-saving peanut drying system. The system comprises a plurality of circular distributed drying monomers and an annular air flue connecting the drying monomers in sequence; each drying monomer comprises a spindle-shaped shell and a hollow olive body sleeved by the shell and used for accommodating peanuts to be dried; the annular air flue is connected to the shell; an air inlet duct and an air outlet duct are separately arranged on each hollow olive body corresponding to the annular air flue at two sides of the hollow olive body; the air inlet duct and the air outlet duct are oppositely arranged and separately communicate the inside with the outside of each hollow olive body; an air-driven impeller is fixedly sleeved by the air inlet ductand another air-driven impeller is fixedly sleeved by the air outlet duct; the hollow olive body is driven to rotate in a vertical direction by wind powder which moves in and out; the middle part ofthe hollow olive body is distributed with a plurality of dripping holes along the periphery of the hollow olive body; the middle bottom of the shell is provided with a water outlet; a plurality of rotary annular air-pressing fans sleeves the annular air flue between each adjacent drying monomers; air is injected unidirectionally into the annular air flue through air inducing covers; and an air heating rod is arranged in each air inducing cover arranged in front of each annular air-pressing fan.