In 1973, through Roe v. Wade, the U.S. Supreme Court established for the first time a woman constitutionally protected right to free choice to have an abortion. The decision's derivative interpretation of the Constitution's Fourteenth Amendment to due process grounded the right to abortion in the right to privacy, and the right to abortion has had constitutional provenance ever since. The decision was considered a significant victory for female rights protection; however, it remained a controversy for several decades, particularly on moral and religious spectrum. The case was overturned by the US Supreme Court 50 years later, putting a halt to the process of abortion liberalization. It means that each state in the U.S. would decide its own laws and regulations regarding abortion, which set off a worldwide debate on women's rights. This article compares the legal systems of women's rights in China and the United States through the above-mentioned case, and finds that there are many differences in the legislation and implementation of the existing laws in both countries, mainly due to the discrepancy in culture, history, religion, etc. Discussion on effectiveness and limitations of legal solutions to ethical disputes is also mentioned, law can provide a broad framework for solving ethical dilemmas, but unable to deal with every individual perspective or be detailed enough to deal with every possible scenario. In short, the law is only one of the tools in a broader ethical framework that needs to work align with the context of other social determinants.