《中华人民共和国民事诉讼法》第59条第2款对无独立请求权第三人作出了相关规定，其中无独立请求权第三人参诉方式的规定过于简单粗略，不够细致。在此规定下，无独立请求权第三人参诉方式有两种，分别是通过申请参加以及法院依职权通知参诉。通过申请参加诉讼的方式是否合理暂且不表，法院依职权通知第三人参加诉讼确实存在诸多明显的问题：可能会有法院滥用追加无独立请求权第三人的权利，无独立请求权第三人的权利义务也不甚明晰。因此本文通过对无独立请求权第三人参诉方式进行研究，主要论述法院依职权通知无独立请求权第三人参诉为什么不合理，在此基础上提出相关看法以及改进建议。

本文一共分为四个部分。

第一部分为无独立请求权第三人制度概述，分别论述该制度的概念、特征、立法目的以及历史发展，为后续研究奠定基础。

第二部分为域外相关制度以及追加方式考察，通过对德国、日本、美国的类似制度以及追加方式进行考察和比较，为我国无独立请求权第三人的相关制度改进提供经验和参照。

第三部分为我国无独立请求权第三人参诉方式的弊端分析，从司法实践的视角以及学理的视角进行研究和剖析，主要分析法院依职权通知无独立请求权第三人参诉的弊端，从而概括出该制度的不合理之处。

第四部分为我国无独立请求权第三人参诉方式改进，从多个角度对改进相关制度提出建议。

Paragraph 2 of Article 59 of China's civil procedure law makes relevant provisions on the third party without independent claim, among which the provisions on the way of the third party without independent claim are too simple, rough and not detailed. Under this provision, there are two ways for the third party to participate in the litigation without independent claim, namely, by applying for participation and the court notifying the participation in the litigation ex officio. Whether the way of applying to participate in the litigation is reasonable is not shown for the time being. The court informs the third party to participate in the litigation ex officio. There are many obvious problems: the court may abuse the right of adding a third party without independent claim, and the litigation status, rights and obligations of the third party without independent claim are not clear. Therefore, though the study on the mode of third party's participation without independent claim, this paper mainly discusses why it is unreasonable for the court to notify the third party without independent claim ex officio, and puts forward relevant views and improvement suggestions on this basis.

This paper is divided into four parts.

The first part is an overview of the third party system without independent claim, which discusses the concept, characteristics, legislative purpose and historical development of the system, so as to lay a foundation for follow-up research.

The second part is the investigation of relevant extraterritorial systems and additional methods. Through the investigation and comparison of similar systems and additional methods in Germany, Japan and the United States, it provides experience and reference for the improvement of relevant systems of the third party without independent claim in our country.

The third part is the analysis of the disadvantages of the third party litigation without independent claim in China, which is studied and analyzed from the perspective of judicial practice and academic theory. It mainly analyzes the disadvantages of the court notifying the third party litigation without independent claim ex officio, so as to summarize the irrationality of the system.

The fourth part is the improvement of the way of the third party without independent claim in China, and puts forward suggestions to improve the relevant systems from multiple angles.