UHPFRC cementitious composite materials reinforced by steel fibres find a practical application all around the world but also in the Czech Republic. This material has a big potential for modern structures but it has a lot of problems, theoretical, technological, etc. Homogeneity of the steel fibre distribution is one of these problems. Homogeneity of steel fibre distribution has a significant impact on mechanical properties of UHPFRC, especially tensile strength in bending. A lot of authors describe impact of steel fibre distribution on final mechanical properties, but lot of them do not describe methods for checking of the steel fibre distribution. This paper will summarize methods of checking distributions and will present practical results of checking homogeneity by optical method.