处理遗产继承纠纷案件时,我们常常会遇到这种情况,夫妻一方死亡留下遗产,另一方有继承权并要求继承遗产,此时法院往往先要审查该另一方有无继承遗产的权利,即要确认其婚姻的效力。这里,遗产纠纷的处理须以确认其婚姻的效力为前提,在国际私法领域也同样存在这样的问题。我们知道,国际私法的作用,旨在依据涉外民事法律关系。寻求其应适用的法律,使涉外民事纠纷得以解决。一个涉外民事案件可能仅存在一个争议问题,也可能包含数 We often encounter this situation when dealing with cases of inheritance disputes, where one of the spouses dies leaving the estate and the other has the right to inherit and requires inheritance, at which point courts often first examine the other's right to inherit the property, To confirm the effectiveness of their marriage. Here, the treatment of inheritance disputes must be based on the confirmation of the validity of their marriage, and the same is true in the field of private international law. We know that the role of private international law is based on the relationship between civil law and foreign affairs. Seek the law that should be applied to solve the foreign-related civil disputes. A foreign civil case may have only one issue of controversy, may also contain numbers