随着社会变迁和人们婚姻自由观念的深入，家庭形式多元化的发展趋势已经呈现不可逆的态势。近些年来，从沿海到内陆，从城市到农村，从老年人群体到青年人群体……非婚同居已经成为多元化发展体系下一种全新的生活模式及客观存在的社会现象，并呈现逐年上升的趋势，与此相伴也产生了一系列复杂多元化的社会纠纷和现实难题。因为我国法律目前对于非婚同居的态度较为中立，这一现象的出现所引发的一些实际纠纷也无法得到妥善的解决。

研究非婚同居这一现象最直接和最显明的意义在于，对社会中客观存在着的事实纠纷进行一些探究和回应。因此，本文试图立足于我国非婚同居这一客观现象，通过剖析其中存在的现实问题和纠纷，为解决非婚同居所带来的社会难题提供一些新的解决思路。本文主要采用文献研究法、比较法学研究法、法律解释学等法学研究方法，将文献搜索与案例探究相结合，从理论与实务的维度对非婚同居进行了探讨。

本文除序言和结语外，共分四个部分。

第一部分是对非婚同居的概念阐述。通过阐述非婚同居的概念与特征，厘清本文对非婚同居的定义。其次通过分析非婚同居与非法同居、事实婚姻之间的区别，进一步确定非婚同居的内涵特征。将非婚同居定义为：具有完全民事行为能力且无配偶的男女双方，未办理结婚登记而拥有共同生活的合意，维持相对公开且持续的同居生活，有类似于婚姻的共同生活的同居事实。

第二部分通过借助三个典型案例，分析目前我国非婚同居在人身关系、财产关系、亲子关系方面存在的最核心的现实纠纷。在人身关系方面体现为：1.非婚同居双方是否具有相互扶养及救助义务；2.非婚同居双方是否具有相互继承权。在财产关系方面体现为：1.同居双方的财产认定及分配问题；2.同居双方的债务承担及经济帮助请求权的问题。在亲子关系方面体现为：1.非婚生子女的生父认定问题；2.非婚生子女的抚养权问题；3.非婚生子女的落户问题。

第三部分通过分析域外英美法系及大陆法系中四个代表性国家针对非婚同居现象的相关立法情况，从中汲取可借鉴的制度经验。分别是美国的：1.承认合同契约模式，2.依据同居者身份给予法律救济，3.创设“类婚姻”关系制度保障财产分配。其次是英国的：1.特殊情形下设立类似婚姻权，2.参照契约法及信托法确定财产归属。以及法国的：1.紧密关系民事协议——PACS，2.承认事实状态下的自由同居制度。最后是与我国极为相似的日本：1.参照婚姻法设立准婚姻制度，2.参照合伙伙伴关系分配财产。通过对这些国家的相关分析，从中汲取值得我国参考和借鉴的司法经验，为我国非婚同居的现实问题的具体解决路径提供一些可供参考的意见与新的思路。

第四部分为我国非婚同居面临的现实纠纷提出具有可操作性的解决路径，从人身关系、财产关系、亲子关系这三个方面提出针对性的建议。在人身关系方面通过：1.明确同居双方的扶养及救助义务；2.事先约定财产分配及遗赠方式；3.建议审慎选择非婚同居。在财产关系方面通过：1.在约定优先的情形下兼顾双方利益；2.明确债务承担方式。在亲子关系方面通过：1.简化非婚生子女的落户程序；2.完善生父认定方式；3.完善非婚生子女的救济方式。

With the social changes and the deepening of people's concept of freedom of marriage, the trend of diversified family forms has shown an irreversible trend. In recent years, from the coastal areas to the interior, from the cities to the rural areas, from the elderly to the young people ... Cohabitation without marriage has become a brand-new life mode and objective social phenomenon under the diversified development system. Because China's laws are currently more neutral on non-marital cohabitation, some practical disputes caused by the appearance of this phenomenon cannot be properly resolved.

The most direct and obvious significance of studying the phenomenon of non-marital cohabitation is to conduct some inquiry and response to the objective factual disputes in society. At present, the phenomenon of non-marital cohabitation is increasing year by year. Along with this, a series of complex and diversified disputes and practical problems have also arisen. However, the overall attitude of our laws to non-marital cohabitation has undergone a transformation from severe crackdown to unprotected and unrestricted "inaction", with more moral restrictions than legal restrictions. There are a lot of non-marital cohabitation relationships in real life, and most of the problems caused by non-marital cohabitation are out of the "vacuum" zone that cannot be relied upon. Therefore, this article attempts to base on the objective phenomenon of non-marital cohabitation in China. By analyzing the existing problems and disputes, it provides some new solutions for solving the social problems caused by non-marriage cohabitation.

This article mainly adopts legal research methods such as literature research method, comparative law research method, and law interpretation science. It combines literature search and case investigation, and discusses non-marital cohabitation from the theoretical and practical dimensions.

Apart from the preamble and conclusion, this article contains four parts.

The first part is based on the concept of non-marital cohabitation. By expounding the concept and characteristics of unmarried cohabitation, the article defines the definition of unmarried cohabitation. Secondly, by analyzing the difference between unmarried cohabitation, illegal cohabitation and de facto marriage, the connotation characteristics of unmarried cohabitation are further determined. Defined as: a man and a woman with full capacity and no spouse who have not registered for marriage but have a common desire to live together, maintain a relatively open and continuous cohabitation life, and have the fact of cohabitation similar to marriage.

The second part uses three typical cases to analyze the most core practical disputes existing in our country's non-marital cohabitation in terms of personal relationship, property relationship and parent-child relationship. In terms of personal relationships: 1. Whether the non-married cohabiting parties have the obligation to support and rescue each other. 2. Whether the non-married cohabiting parties have the right of mutual inheritance; in terms of property relations: 1. The identification and distribution of the property of the cohabiting parties. 2. The problem of debt commitment and the right to request financial assistance of the cohabiting parties; in terms of parent-child relationship: 1. The issue of the identification of the biological father of a child born out of wedlock. 2. The protection of custody rights of children born out of wedlock. 3. The problem of settlement of children born out of wedlock.

The third part analyzes the relevant legislative situation of four representative countries in the extra-territorial Anglo-American legal system and the civil law system, and draws lessons from the experience of the system. They are in the United States: 1. Recognize the contract model, 2. Provide legal relief based on the status of cohabitants, and 3. Create a "marriage-like" relationship system to guarantee property distribution. The second is the United Kingdom: 1. Establish a similar marriage right under special circumstances, 2. Determine the ownership of the property with reference to the Contract Law and Trust Law. And in France: 1. Close relationship civil agreement-PACS, 2. Recognition of the free cohabitation system in the state of fact. Finally, Japan is very similar to our country: 1. Refer to the Marriage Law to establish a quasi-marriage system, 2. Refer to the partnership to distribute property. Through the analysis of foreign legislation, we can extract the essence and remove the dross, and provide reference opinions and ideas for the specific solution path of the practical problems of non-marital cohabitation in China.

The fourth part proposes an operable solution to the practical disputes facing non-marital cohabitation in China, and provides targeted rationalization suggestions from three aspects: personal relationship, property relationship and parent-child relationship. In terms of personal relationship: 1. Make it clear that the cohabiting parties have the obligation to support and rescue; 2. Pre-agreed the property distribution and bequest methods; 3. It is recommended that carefully choose non-marital cohabitation. In terms of property relations, it is adopted: 1. When there is no agreement, the personal property system is the main consideration, taking into account the interests of both parties; 2. Clarify the debt bearing method. In terms of parent-child relationship: 1. Simplify the procedures for the settlement of children born out of wedlock; 2. Improve the method of identifying fathers; 3. Improve the relief methods for children born out of wedlock.