Hospitalization for allogeneic haematopoietic stem cell transplantation constitutes a particular time in the management of patients with malignant hemopathies both for the patient, for his entourage or for the nursing staff. For the patient, the strict protective isolation set up during this period is a source of isolation in the broad sense and is associated with an escape from external events and society. It also constitutes a physical barrier (mask, charlotte, surblouse and overshoes worn by caregivers or visitors) and even psychological in relations with relatives. Moreover, this period is also difficult because of the possible complications of conditioning (mucositis, transit disorders, fever ...) and allograft itself (graft versus host disease, no transplant, relapse disease…). The patient may be weakened and diminished, which can give a feeling of helplessness and uselessness to the family. Finally, this therapy can have serious physical and psychological consequences for the patient and his entourage (especially in the case of family allograft) who do not always have the possibility to express themselves verbally. Published studies in hematology report depressive, anxious and post-traumatic stress disorders in patients and relatives during allogeneic haematopoietic stem cell transplantation. It is therefore important to reduce these symptoms, particularly those related to the cut-off during hospitalization for allogeneic haematopoietic stem cells.