The scientific work investigates the features of administrative liability for offenses in the field of environmental protection. A classification of administrative offenses in the field of environmental protection has been formed, where the most common method is classification by object of encroachment. A study of the composition of administrative offenses in the field of environmental protection. In particular, it is determined that the composition of environmental offenses consists of: object – public relations in the field of environmental protection; subject – a natural sane person aged 16 years; objective side – illegal behavior, causing harm to the environment or violation of legal rights of subjects of environmental law; the causal link between the wrongful conduct of a person and the harm caused, the subjective side – guilt, motive and purpose of the offense. The issues, essence, features and types of measures of administrative coercion in the field of nature protection, the system and types of administrative penalties, the causes and conditions of committing offenses in the field of ecology are studied. In particular, it is determined that the causes and conditions of environmental offenses can be divided into two groups: subjective (is circumstances that arise in a person's desire to commit them) and objective, which include negative consequences for the nature of some achievements of science and technology. In addition, the scientific article attempts to analyze the main mechanisms of prevention of administrative offenses in this area and on the basis of this analysis, the authors provide their own conclusions on improving the administrative and legal mechanism of environmental protection. Also, it is determined that the administrative remedies for the prevention of administrative offenses in the field of environmental protection in addition to the establishment of legal norms, rules, regulations and standards include: state control over environmental protection; persuasion measures; measures of administrative coercion applied for the purpose of prevention, cessation of offenses in the field of environmental protection and bringing the perpetrators to administrative responsibility, as well as remedial measures. It is proved that to improve the administrative and legal mechanism in the field of ecology, our state should introduce: the use of legal, scientifically sound approach, a system of assistance to enterprises in the field of environmental modernization of production, adoption of the «polluter pays» principle, training and retraining of civil servants, environmental sphere. Keywords: administrative offenses, environmental protection, administrative and legal mechanism, composition of administrative offenses, administrative coercion, administrative and legal measures