民法本为崇尚私法自治的权利之法,但在这样的一部法律中也必不可少的存在着强制性条款。故本文探讨了强制性条款存在于民法规范的原因及其作用。这些强制性条款的目的不在于强制和禁止,而是从另一个角度去支撑私法自治,建立了一个自治的基础结构。这个结构的存在有助于公平等价值的实现,有助于平衡个人自由与公共利益。 The Civil Law Act is a law that upholds the right to self-government of private law. However, there is a mandatory clause in such a law. Therefore, this article explores the reasons why mandatory provisions exist in civil law norms and their roles. The purpose of these compulsory provisions is not to impose and prohibit but to support the autonomy of private law from another perspective and establish an autonomous infrastructure. The existence of this structure contributes to the realization of fair values ​​and helps to balance the individual freedom with the public interest.