Abstract: The article considers the problem of the improvement of methodology and information support for trace evidence analysis of the signs of production and technology mechanisms on mass-production items. The research subject is the patterns of formation of the signs of production and technology mechanisms on mass-production items. The research object is the expertise practice of analyzing mass-production items and the standardization of methodology, science, and information support for this form of activity. The purpose of the research is to study the problem aspects of organizing and performing a technological expertise and the formulation of ideas about the improvement of methodology, science and information support for trace evidence analysis of the signs of production and technology mechanisms. The scientific importance of the research is determined by the fact that the author generalizes and analyzes the practice of trace evidence analysis of the signs of production and technology mechanisms and defines the weak points of methodology, science and information support for this type of expertise. Based on this analysis, the author formulates proposals and recommendations for their solving. Along with the scientific significance, the research has practical orientation which consists in the set of measures aimed at the improvement of methodology guidance for performing a trace evidence analysis of the signs of production and technology mechanisms, optimisation of experts’ work, the prevention of expert errors during trace evidence analysis.