Quality of life (QOL) and nutritional status of patients treated for peritoneal surface malignancy are important areas for ongoing assessment. A working group of clinicians including a dietitian, physicians, and quality of life researchers was formed as part of the Fifth International Workshop on Peritoneal Surface Malignancy. The purpose of the group was to form a consensus statement on both quality of life and nutritional assessment in PSM. The relevant literature from the quality of life and nutritional assessment in peritoneal surface malignancy was reviewed and integrated to form a consensus statement. Baseline and ongoing assessment of both quality of life and nutritional status of patients undergoing cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy (HIPEC) is recommended.