民法第一◦九三條的遺囑指定監護人，是父母親權的延伸，因 此父母以遺囑指定監護人，自然就必須受到父母親權行使原則的限 制，故本文即在探討父母親權行使原則究竟會如何影響父母以遺囑 指定監護人的效力。此外，如果父母所爲的遺囑指定監護人無效， 則現行民法第一◦九四條的法定順序決定監護人，是否合理？如何 才是理想的監護人決定制度？也是本文所要討論的重點。

The appointment of guardian by a will specified within Article 1093 of the ROC Civil Code is the extension of parent’s right. As such, the guardian appointed by the parent by means of a will, which shall be restricted under the exercise principle of the parents’ right accordingly. This article would like to explore how it will affect the effect upon appointment of guardian by a will under the exercise principle of the parents’ right. In addition, in case the appointment of guardian by will executed by the parent is void then the guardian should be determined under the statutory order specified by Article 1094 of the Civil Code. Does it sound reasonable? What is the ideal function for determination of the guardian? This would be also the key point of this article.