PREREQUISITES OF APPLICATION OF MEASURES OF THE STATE PROTECTION OF THE PARTICIPANTS OF THE RUSSIAN CRIMINAL TRIAL PROMOTING JUSTICE Dmitriyeva Anna Aleksandrovna, PhD at law, associate professor. <...> Place of employment: National research university “Southern Ural state university” Department: criminal trial and criminalistics chair. -mail: annadm@bk.ru Annotation: Occasions and the basis as obligatory prerequisites, applications of security measures and measures of social support in the relation of the persons rendering assistance to criminal justice are considered. <...> It is brought the critic of the available list of ways of threat to the protected face in whom only concrete structures of crimes are specified. <...> The general formulation of reality of threat of the person rendering assistance to criminal justice which shouldn't be limited is necessary. <...> The task – to Determine basic reasons of insignificant application of measures of the state protection of the participants of criminal procedure promoting the Russian criminal trial. <...> One of such reasons, uncertainty of prerequisites of decision making about application of measures of protection Model – as a methodological basis research of problems of legislative and law-enforcement activity in the course of application of measures of the state protection is determined. <...> Conclusions – Are offered the main directions of change of the regulatory base and increase of efficiency of application of measures of the state protection of the persons promoting criminal proceeding. <...> A framework a research/a possibility of subsequent use of results of scientific work – the offer can be used by further comparison of occasions and the bases of application of measures of the state protection with other prerequisites of application of other security measures of participants of criminal procedure. <...> Practical value – offers of enhancement of the existing Russian legislation on safety of participants of criminal procedure can draw attention of law enforcement officials (investigators, investigating officers, prosecutors and vessels) Social consequences – increase of efficiency of ensuring the state protection of participants of criminal trial who help criminal justice the authority of law-enforcement system will allow to raise [NEW] and will provide keen interest in assistance in fight against crime from citizens as potential participants of criminal procedure. <...> Originality/value – the offered directions of increase of efficiency of the right regulation of prerequisites of application of measures of the state protection can be used for future enhancement of the Russian legislation including <...>