Bladder concretions are one of the most frequent and difficult to correct complications of bladder exstrophy. The significant proportion of struvites in the structure of concretions often creates an erroneous opinion about the size of the latter and makes it difficult to choose tactics. A case of staged treatment of bladder exstrophy complicated by the formation of a bladder concretion against the background of the current active inflammatory process is presented. Contact cystolithotripsy is the most preferred and least traumatic method of getting rid of bladder concretion of any size. In the case of anatomical closure of the urethra, access through the appendicostomy is most rational, allowing the insertion of an instrument of sufficient diameter for effective intervention.