With the restorative trend and debating on parallel prose, the comments on XU Ling and YU Xin''s paralled prose were becoming more day by day in proofreading, note-offering, and annotation in the Ming and Qing Dynasties. we find there existed some huge differences from general comments, which looks like impression type or a label to be pasted. They could find XU-YU''s advantages and affirmative their positions and values in Chinese literary history, even give some sympathies and understandings to their norms of action. Their comments, transcended the Tang-Song Dynasties and common cognitions, are worth learning by our literary researchers and historians.