The purpose of study is to investigate the current status, cognition and developmental strategies of music therapy in childhood cancer-related institutions. The subjects were staffs from childhood cancer-related institutions and music therapists with experience for children with cancer, and data from 36 institutions and 88 therapists were analyzed through an online survey. The results are as follows. Firstly, the level of implementation of music therapy in childhood cancer-related institutions was generally low, with most programs decided by the institutions and conducted by the therapists. Group sessions for pre-school children were notably frequent. Secondly, while all institutions were aware of music therapy, cognition varied based on whether they had observed music therapy activities. Institutions with experience in conducting music therapy answered self-esteem enhancement as the most effective objective, whereas those without experience answered enjoyment as the effective objective. Thirdly, for the advancement of music therapy, therapists emphasized the need for understanding the prognosis of the disease, showing a significant difference between institutions that had conducted music therapy and those that had not. This research highlights the need for developing music therapy programs individualized to the characteristics of childhood cancer patients and offers strategies for future implementation of music therapy for these patients, marking its significance.