This article focus to Discuss on Criminal Procedure and the Constitution. Criminal procedure is a branch of constitutional law interested in the rules of legislations governing the procedures in which authorities investigate, prosecute, as well as adjudicate crimes. Specific provisions of the U. S. Constitution restrict the police. In addition, state constitutions, national and state statutes, courtroom decisions, and administrative rules circumscribe how the police gather information and take care of criminal suspects. The framers of the U. S. Constitution sought to balance the government’s desire for crime control with the privacy and liberty rights of innocent, suspected, as well as convicted individuals.