Determination of the investigator and the prosecutor procedural status is formulated in the article. Powers of the prosecutor in relation to the investigator are described. The author notes main objectives of the prosecutor activity. Changes of criminal procedure legislation which affect functions of the prosecutor and the investigator are studied. The problem of procedural independence of the investigator is considered. Main questions which the prosecutor has the right to address to the investigator are analyzed. It is offered that investigators should be a part of unified department but should closely interact with other law enforcement agencies. Rights of supervision of decisions legality, investigator actions (inaction) don’t limit procedural independence of the investigator. It is offered to give to the prosecutor an opportunity to give to the investigator written instructions on the direction of investigation and procedural actions production. At the same time the investigator has to have the right not to agree with these instructions and to report about it to the head of investigative body and also to the higher prosecutor. Introduction expediency of a new form of public prosecutor's reaction - introduction of cautions about inadmissibility of law violation to the investigator is proved. Such caution doesn't influence procedural independence of the investigator and just notifies him that when the prosecutor receives criminal case with indictment, contents will have certain claims. At the legislative level it is expediently to differentiate the prosecutor's powers on consideration and permission of complaints depending on the form (inquiry or preliminary investigation) in which preliminary investigation on criminal case is conducted.