Next, one of the features of Anglo-American law is the "rule of law." This holds that law exists above all areas and powers of the state, such as administration, legislation and the judiciary, and recognizes that all state power is under the law. Therefore, the law in the rule of law exists not merely as formal law but as substantive law embodying justice, moral values and rationality. Because law, under the principles of justice and morality, also influenced the interpretation and operation of law through principles such as due process and fairness and equity, laws enacted by Parliament came to bind everything. This ultimately meant the principle of parliamentary sovereignty, and protecting the individual through the supremacy of the judiciary is the most central aim of this principle. The rule of law has characteristics quite opposite to the Rechtsstaat principle of continental law: whereas the rule of law binds all exercises of power, the Rechtsstaat principle binds only the administration. In addition, because it regards formal content alone as sufficient for law, the administration, judiciary and legislature can have equal powers. However, as the modern Rechtsstaat principle has also developed from a formal to a substantive Rechtsstaat, most of the major differences that appeared between Anglo-American and continental law have disappeared.

For reference, the material writes that Anglo-American law is a concept contrasted with equity, but it is common law in the narrow sense that is contrasted with equity, while Anglo-American law in the broad sense includes both. The United Kingdom has no single codified constitution, but its constitutional order is made up of Acts of Parliament, case law and constitutional conventions. Korea has run citizen-participation trials, in which the jury's verdict has advisory effect, since 2008, and the career requirements for appointing judges under the unification of the legal profession have been adjusted several times by statutory amendment, so check the current standard.