意思表示解釋的研究一直以來都是民法上的研究重心，2017年中國大陸通過民法總則後，對於意思表示解釋的方法，再度受到注目。本文擬先說明意思表示解釋的方法，再針對客觀解釋要素為說明。研討德國、日本與中國大陸的文獻與判決，再回歸探討我國法制上的不足與我國實務的發展。其中本文對意思表示解釋的要素，將以經驗法則為研究中心，聚焦於「社會通念」與「交易習慣」的研究，提出個人看法。

While the interpretation of the Expression of Intent has always been the core of Civil Law research, the methods of conducting such interpretation have once again caught the attention after China passes the General Principles of Civil Law. This thesis aims to first elaborate on the methods of interpreting the Expression of Intent and the elements of objective interpretation, then research on the literature and trials of Germany, Japan, and China, and finally analyze the deficiency of Taiwan's domestic law and the development of the law practice. The elements of interpreting the Expression of Intent in this thesis will be centered on the Rules of Expression, while targeting on the research of social common sense and the trade custom with personal point of view delivered.