Development of active ingredients analysis methods is one of stages of medicinal form creation. As a result of the previous researches the capsule form of an antiviral drug triazavirin is received. The technique with application of a highly effective liquid chromatography on the hromatograf «Agilent 1200» is offered as triazavirin analytical method. Analysis conditions of triazavirin are picked up in the experimental way. The chromatographic column Zorbax eclipse XDB C18 is suitable for carrying out the analysis. It is necessary to carry out validation of the analysis method for its further inclusion to the draft of pharmacopoeial article. Accuracy and linearity of a technique was defined by results of experiment. The analysis of five solutions with concentration from 60 to 135 % of the main substance was carried out. The relative standard deviation of analytical method is 1,59 %. Triazavirin analytical technique is recognized exact by criterion of precision. Linear dependence between indicators of triazavirin concentration and the areas of peaks is expressed by Y=18,076C-833,857 equation. The factor of correlation is 0,99553.