The invention provides a rotational flow inner cone integrated afterburner. A hydrocyclone is arranged on a stress application inner cone, led-in cooling air forms a recirculation zone at the downstream through the hydrocyclone distributed on the stress application inner cone, formation of mixing gas is accelerated, the burning process is strengthened, a flame is stabilized, and meanwhile, the outlet temperature distribution is improved. A similar two-stage hydrocyclone device is formed through the hydrocyclone on the stress application inner cone and an external rectification support plate flame stabilizer, fuel pulverization and fuel space distribution uniformity are improved, burning is more sufficient, the total length of the afterburner is further decreased, the structure weight is decreased, the resistance loss is reduced, and the engine thrust-weight ratio has a very great promotion space.