The House of Lords in the British legal system and the Supreme Court in Iranian law as the highest authority in the judicial structure have a legislative - historical background. In this regard, the House of Lords, known as the Supreme Court in the new rules of the country, in addition to its special mission in the final hearing of objections to the highest courts, in the light of the special structure of the common law system. has played a special role in the regulation and creation of legal rules and regulations in the United Kingdom and has practically a function similar to the legislation in the Iranian legal system. However, in Iranian criminal law, the Supreme Court, in addition to exercising oversight by examining some objections (appeals and retrials) regarding the rulings issued by the country's courts in order to eliminate judicial errors and ensure the correct implementation of laws, by performing its duties in the form of Interpretation of issues and assignment of cases in cases of dispute in the procedure of courts while issuing a ruling on unity of procedure, resolving disputes in jurisdiction, reviewing the objection of rejection of the judge in case of multiple judges, prescribing referrals and violating the verdict rules due to non-compliance acts to protect the laws approved by the legislature.