The invention discloses a method for adjusting and controlling the coarse second phase of a 2219 aluminum alloy ring part. The method comprises the processes of multi-direction forging cogging, medium-low-temperature shack reaming, high-temperature annealing, medium-low-temperature ring part rolling and heat treatment. The method adopts medium-low-temperature shack reaming+ high-temperature annealing and medium-low-temperature ring part rolling-solid solution, the coarse second phase is thoroughly crushed through the lower-temperature deformation shearing function, the dynamic recovery is suppressed by using the lower temperature condition to generate a high-density element diffusion misalignment channel, in the follow-up high-temperature annealing process, the thorough dissolution of thesecond phase after crushing is achieved, and the mechanical properties of the ring part are improved accordingly.