The theme of this work is documental evidence and their influence on the practice of the courts. The author‘s suggested concept of the documental evidence is given in the work. It is accentuated that documental evidence consists not only from the documents but also from various material things that contains important information for the case. The given classification of the documental evidence confirms the proposition that evidence can be expressed in various material objects in various ways. The exceptional attention is payed to official documental evidence that is very important for the court practice because it has a prima facie power and can not be denied by the evidence of witnesses´ (with some exceptions).