Abstract: Precision is a key factor affecting visual working memory, and the neural mechanism of precision representation is of great significance for improving working memory ability. Previous studies have found that the precision of working memory representation is related to the activity patterns of the entire visual cortex and the parietal sulcus. Detailed memory features are encoded in a distributed activation pattern in the visual cortex and relayed to the parietal cortex. The upper parietal sulcus of the parietal cortex directs attention towards a limited number of memory representations, thereby controlling the representation process of visual information from top to bottom. In addition, factors such as working memory capacity, attention, and negative emotions can all affect the precision of visual working memory representation. Future research should explore the temporal characteristics of visual working memory precision representation and delve deeper into the influencing factors of visual working memory precision representation.