The article discusses the key aspects of the guidance of the European Psychiatric Association (EPA) on forensic psychiatry and the required actions to implement guidance into clinical practice. The authors pay attention to the discrepancies between the recommendations resulting from the guidance and clinical practice and current systemic solutions. The basic difficulties were discussed in relation to the implementation of the guidelines in the clinical practice in Poland as regards providing services as an expert by psychiatrists and psychologists, risk assessment and management, psychiatric therapy in detention centers, implementation of protection measures in inpatient and outpatient treatment conditions, efficiency of pharmacological and non-pharmacological interventions. We hope that discussing the content of the guidance will help to deepen the knowledge of clinicians in the field of work as court expert witnesses and persons responsible for the implementation of the preventive measure. Based on the clinical experience measures were proposed that enable implementation of the guidance, and thus improvement of the quality of care exercised over the mentally ill criminal offenders.