To explore psychological aspects of the treatment by insulin pump (CSII), its contraindications caused by psychological reasons, emotional and behavioral reaction to the start of treatment. The attitude to the technology and social and interpersonal aspects of CSII (acceptation/rejection) are mentioned.The particular attention is given to manipulation with insulin and the fear of hypoclycemia and hyperclycemia.Finally, an overview of educational recommendation how to help to accept the treatment by insulin pump is presented.