蕭梁元帝承聖三年（西元554年）江陵城破，城中官員與士民盡歸長安；十三年後，北周武帝天和二年（567）秋七月立露門學，並以南朝士人為主體，武帝為何要於露門立學並以南朝士人為主體？為何至北周宣帝時北方大儒也進入露門學？對於露門學的概念與定義，近世有謂為國子學，亦有謂為師保之學，若依此之論述，筆者以為有數個疑點：西魏北周有無國子學？若有，國子學成員出身背景為何？與露門學是否相似？為何宣帝要於露門學行釋奠之禮？筆者嘗試將參與露門學成員做分析，比較露門學於北周時期的發展與變化，並將露門學簡分為三個時期，一是宇文護掌權的時期，二是武帝親政的時期，三是宣帝即位後的時期，並討論露門學與國子學以及師保之學的不同，最後透過露門學變化的狀態反映露門學於北周武帝與宣帝兩朝扮演的角色。

In Cheng-sheng third year of Emperor Liang-yuan (梁元帝) (A.D.554), the Chiang-ling (江陵) city was broken and aflame by the troops of West-Wei (西魏). All the officers and scholars in Chiang-ling were forced to immigrate to West-wei's Capital-Chang-an (長安). Thirteen years later, the Lu-men academy (露門學) was established by Emperor Zhou-Wu (北周武帝) in Tian-he second year (A.D. 567). He employed lots of scholars from the south into his academy. What was his intention? Why there were famus scholars of north joined Lu-men academy as well at the period of Emperor Zhou- Syuan (北周宣帝)? Some of modern scholars define Lu-men academy and National academy (國子學) and educational system of the royal teachers (師保之學) are all the same. There are few doubts come from the author; Had National academy existed in North Zhou? Were the scholars in National academy and Lu-men academy the same affiliate? Why did Emperor Zhou-Syuan hold the Confucius ceremony (釋奠之禮) at Lu-men academy? Author would tries to distinguish the member of scholars in Lu-men academy and analysis the changes and influences in North Zhou by three stages. First stage is the period when Yu-wen, Hu (宇文護) ruled the country. Second stage is the period when Emperor Zhou-Wu ruled the country. Third stage is in the period of Emperor Zhou-Syuan. Author would like to explain Lu-men academy is different than National academy and the educational system of royal teachers either. Eventually, these changes of Lu-men academy did reflect the differet roles during Emperor Zhou-Wu and Emperor Zhou-Syuan.