The international activities of JSPHO are managed by the international relations committee.

The activities include the following:

1. Academic exchanges with foreign and international societies in the fields of pediatric hematology and oncology
2. Academic exchanges with foreign and international societies in the fields of pediatric hematology and oncology
3. Support for JSPHO members who are engaged in global activities in the field
4. Assistance for foreign scholars to attend the JSPHO annual meeting
5. International medical cooperation