The development in the new era, under the influence of the open door policy, China has made great progress in both introduce foreign direct investment and invest abroad. With the development of new forms of investment, the problems with foreign direct investment are also increasing in China, the issue of property protection and restriction of foreign investors is inevitable in the development of international investment and trade.In 1990s, there was a consensus on the expropriation of foreign investors, but the expansion of the concept in recent years blurred the solutions, The reason for this changes is mainly due to that the previous issue of the protection in this problem is developed by the developed countries, the policy their pursed are on behalf of the developed countries’ interests. But now after the rise of the developing countries, they began to use their new status in the world market to set more restriction to the expropriation clauses for their different interests about the standard. According to these changes, this paper will analyze the causes, the related concepts and legal basis to find out the essence problem behind them. Through compare the different practices of different countries, regions and organizations to seek the specific solution in the expropriation of the property of foreign investors. This paper stars from the second chapter to analyze the expropriation problems, the second chapter is mainly to expose the concept of the expropriation. The concept between expropriation and nationalization has some difference, this paper is more inclined to use the “expropriation” which is amore neutral word to discuss the problems. In this chapter the legal theory and practice of the world will be used to analyze the expropriation position and component of the host country. In the third chapter, the author discusses the problem of indirect expropriation especially in the concept's expansion problem and the interests, imbalance problem between host country and the investors which lead to the discussion of the standard of the indirect expropriation which involves the different focus in the theory and practice. And then use the proportion principle to analyze these problems. This section also discusses the exception of the indirect expropriation, which makes the definition of the indirect expropriation more clear by enumerating the distinction between reasonable control and indirect expropriation. In the fourth chapter, the author discusses the compensation problem which is unavoidable after expropriation, First to dialectical compare the difference between compensation and damages. Then make an exposition about existing international compensation standards, through these two parts to lead a way of compensation which can be taken in the practice. And use the proportion principle to solve the calculation problem of compensation. The last chapter is a summary of the issues describe in the above chapter and a comprehensive describe of solutions in solving expropriation of the investors' properties. Key words: Foreign direct investment, indirect expropriation, compensation on expropriation, proportion principle

新时期新发展，在对外开放政策下影响下，我国无论在引进外商直接投资亦或是在向外投资上皆取得较大发展。伴随着新的投资形式的发展，我国在外商直接投资问题上所面临的问题也日趋增多。外商投资者的财产保护与限制问题即为国际间投资贸易发展上不可绕过的一项重要问题。在20世纪90年代，对外商投资者的征收条款曾一度达成共识，但近年来由于征收概念的扩大化使得这一系列的解决方法又变得模糊不明。发生这样变化的原因主要因为先前对于征收保护的问题是由发达国家为主导，所奉行的解决政策也都倾向于发达国家注重的利益，而现今发展中国家崛起后，开始运用自己在世界市场上的地位发声，提出了与发达国家立场不同的利益标准，使征收条款在制定时增添了许多限制性的条件。针对这些变化，本文将就其原因及相关概念、法律依据进行分析梳理，找出其背后的实质问题，通过对比各个国家、地区及组织的不同做法，寻求我国在对外商投资者的财产在征收保护与限制问题上的具体解决方法。 本文从第二章开始对征收问题进行阐述分析，第二章主要是对征收的概念进行阐述，征收与国有化的概念存在一定差异，本文更倾向使用“征收”这一较中性的词汇来进行讨论。在此章中通过法理及实践做法来分析东道国对征收问题的立场及征收构成条件。本文第三章主要针对间接征收引发的问题——间接征收扩大化及东道国与投资者间利益失衡来进行分析，并由此引出对间接征收认定标准的讨论，此间涉及到理论上与实践上在认定中所关注的不同点，并就这些不同点运用比例原则来进行剖析。该部分还涉及间接征收例外的讨论，通过列举合理管制与间接征收的认定区别来使间接征收的认定范围得以细化明确。 本文第四章讨论的是在征收发生后不可避免的补偿问题。首先该部分对补偿与赔偿间的差异性进行分析辩证。之后再对国际上现存的征收补偿标准进行阐述，通过这两部分来引出我国在征收补偿方面可以采取的做法，并就补偿款的计算方式这类细节问题运用比例原则提出适用上的看法。 本文最后一章是对上述章节阐述问题的总结和对问题的可解决方式进行综合阐述。 关键词：外商直接投资，间接征收，征收补偿，比例原则