The goal of this clinical trial is to learn if dTMS targeting the ACC can be used to rapidly and effectively treat AN. A randomized controlled study design is adopted, in which patients with AN are divided into the CBT+dTMS treatment group and CBT+pseudostimulation group by 1:1 randomization, followed by a 6-week intervention and a half-year follow-up to clarify whether CBT combined with dTMS is superior to single CBT treatment for AN.