A defecation treatment device comprises a discharge means and an excrement containing means. The discharge means comprises a discharge tube, which has an excrement inlet formed on an end thereof such that the end is inserted into the anus, thereby sucking excrement. The excrement containing means comprises a flexible pack, which is coupled to the other end of the discharge tube so as to contain the excrement sucked into the discharge tube, a case, which contains the pack, which is coupled to the other end of the discharge tube, and which has an air outlet formed thereon so as to discharge inner air to the outside such that excrement can be contained in the pack, and a pump capable of discharging air in the case through the air outlet.