The main purpose of the article is to ensure the safety and security development of the country through the effective implementation of its law functions. For this, the main scientific task is to model the correct execution of criminal law functions in the context of safety and security development (provinces and territories of Canada). The object of the study is the system for ensuring safety and security development. The research methodology involves the use of modern modeling methods. IDEF, SMART, and SWOT methods are used. As a result, we received an information diagram of the performance of criminal law functions in the context of safety and security development. The elements of the novelty of the results of the study are presented by presenting the main stages of the implementation of criminal law functions in the context of safety and security development. The information diagram consists of several blocks that, through arrows, allow you to explain key processes. The innovativeness of the article is presented in the form of a model for the implementation of criminal law functions in the context of safety and security development. The study is limited by taking into account only criminal law functions. One of the limitations is not only the functions, but also the narrowing to the criminal law of only one country, and, as a result, the specifics of the law of other countries are not taken into account. Prospects for further research should be devoted to aspects of ensuring legal security in the framework of safety and security development planning.