Objective: The effectiveness of palliative care for patients with amyotrophic lateral sclerosis (ALS) has not been fully validated. This study aimed to evaluate the impact of palliative care interventions on ALS patients using the Integrated Palliative care Outcome Scale (IPOS). Methods: A retrospective study was conducted on ALS patients at National Hospital Organization Yamagata National Hospital who received interventions from the palliative care team between November 2020 and December 2022 and were proxy-evaluated using IPOS. Results: Eleven patients were included in the analysis. Before and after the palliative care team intervention, the total IPOS score improved significantly from 24 to 18.9 (p=0.032), and the score for “Have you felt at peace” improved from 2 to 1 (p=0.031). Conclusion: Palliative care interventions may help alleviate suffering in ALS patients. However, further studies with larger sample sizes and long-term observational research are required to confirm these findings.