This article focuses on the stability of permanent magnet vertical axis wind power generation, analyzes its structural characteristics, working principles, and factors affecting stability, and proposes strategies to improve stability. Research has shown that permanent magnet vertical axis wind power generation has advantages in low wind speed start-up, complex wind direction adaptation, etc., but there are limitations in relatively low power generation efficiency. By optimizing design, improving control strategies, and strengthening operation and maintenance management, its stability can be effectively enhanced.