The seal of Linyou officer Zhu Ji is a cultural relic. In the Tang and Song Dynasties, the official seal was replaced by "Ji" or "Zhu Ji" at the end. Later people called it "Zhu Ji" official seal, that is, Zhu Jiyin. As a very precious cultural relic, Zhu Ji Seal of Linyou Military Office enriches the seal art with its unique interest and artistic conception. Its unique shape is unique in the majestic seal script printing forest, which opens the way for official script and regular script to enter seal cutting and inspires the spirit of independent innovation of seal engravers in later generations.