The examination and treatment of 22 children at the age of from 2 to 14 years after surgical correction of fistulous forms of atresia of the anus and rectum was carried out. In all the patients, besides of general clinical investigations, the special studies of the large intestine with the use of roentgenologic and functional methods were performed. A scale-table for assessment of a degree of anal incompetence have been developed, criteria for choice of rational tactics for rehabilitation of the patients established.