The concept of linguistic expertise began to attract the attention of linguists as early as the beginning of the last century. The possibility of using language as evidence to uncover criminal facts in practice surprised many. However, it is now becoming i ncreasingly evident just how significant the practical function of language is. Through linguistic expertology, it has become possible to find solutions to any complex issue, clarify evidence, and narrow the circle of suspects. The next task is to develop national methodologies that take into account the specific linguistic characteristics of each language. In particular, Uzbek national linguistic expertology also incorporates national approaches without rejecting world standards. Therefore, developing the methodology for Uzbek national linguistic expertology and implementing it in practice is one of the most critical and urgent issues in the field. This article will cover such matters as the specific aspects of Uzbek national linguistic expertology, defining the object of linguistic expertology, and determining its scope. Linguistic expertise, expertise, expertise, language, law, text, evidence, linguistic analysis.