Author analyses selected problems connected with the regulation-making competence of municipalities. He points out the limits of the municipalities regulation-making defined by the Constitutional Court of the Slovak Republic, the implementation problems that reflect professional level of members of municipal councils. He deals with the exercise of a municipality mayor’s suspension power in connection to the municipality by-laws, as well as potential subjects of a regulation- -making initiative. He suggests the legislative solutions and gives the arguments for them. He uses the method of the constitutional-law-based analysis of the institutes and connections under research, complemented by the method of synthesis of obtained knowledge based on experience from practice of municipal self-governments (empirical method).