Light control orientation technology has always been a crucial aspect of liquid crystal optical device fabrication, and precise measurement of the relationship between the anchoring strength and exposure conditions in light control orientation technology is vital for improving device performance. However, current methods for measuring anchoring strength have certain limitations, such as the inability to achieve multi-state measurements before and after a single-point orientation film, leading to inconvenience in practical applications. In this regard, this paper proposes a novel measurement method for azimuthal anchoring energy based on the phase detection principle. The method utilizes a differential normalization fitting approach, combined with correction for the omnidirectional transmission characteristics, effectively eliminating initial placement errors. This not only optimizes the measurement process, keeping the measurement error within 8%, but also significantly improves measurement efficiency. Theoretical and experimental results indicate that this method can rapidly and effectively measure the anchoring energy of light control orientation films with changes in exposure parameters, exhibiting high accuracy and stability. It can provide real-time online monitoring means for the precise manufacturing process of liquid crystal optical components, playing a crucial role in understanding the physical processes of light control orientation and enhancing manufacturing quality.