The servitude originated is an important system which is set up both on the civil law of the Civil law system and the property law of the Common-Law system. 地役权是大陆法系民法及英美法系财产法上均设立的一项重要制度，地役权制度能够提高土地利用价值，最大限度地发挥土地的效能。
Mortgage, as a kind of security, which was originated from the ancient security system of Fiducia in Roman law, had acquired development and maturity in Common Law. 按揭这一担保形式，源于罗马法的古老的信托质担保方式，发展并成熟于英美法系国家。
