This study guide describes the concept of corpus delicti and its significance, the concept of the corpus delicti in criminal law of some foreign countries, its significance, similarities and differences with national criminal law, the legal structure (elements and signs) of the corpus delicti and its types, the structure of the corpus delicti and the descriptive signs of the elements of the corpus delicti, types of the corpus delicti and their specific characteristics, criminal action and inaction as a form of socially dangerous behavior: the relationship of general and specific signs, the nature, structure, occurrence and types of criminal consequences, theories of causation in criminal law and their problems (criteria, principles, and rules for determining causation), comparative-legal analysis of the objective side of the crime and the concept of "actus reus(guilty act)", the structure (construction) of the signs of corpus delicti (composition of crime) in legislation, fundamental rules for qualifying an act based on the essential and facultative signs of the corpus delicti (composition of crime), the criminal law significance of certain facultative signs of the corpus delicti (composition of crime) in the qualification of an act. This This study guide is intended for students of higher education institutions, professors and teachers of legal educational institutions, doctoral candidates, independent researchers, academic staff, and employees of law enforcement agencies.