The invention provides a heat treatment method capable of improving the surface quality of an aluminum profile, and belongs to the field of metal heat treatment technologies. The heat treatment methodcomprises the steps that the aluminum profile is subjected to solution treatment under the rare earth organic solution existing condition at the temperature of 525-535 DEG C, then, the aluminum profile subjected to solution treatment is transferred into a rare earth solution to be subjected to cooling treatment, and after cooling, aging treatment is conducted. Through the solution treatment and aging treatment, the strength and hardness of the aluminum profile are improved, in addition, treatment is conducted by adopting a rare earth organic solvent and a rare earth solvent in the solution treatment and cooling processes, and aluminum profile oxidization is prevented.