Little is known about early death after admission during the terminal phase in advanced cancer patients. We retrospectively analyzed data from 510 advanced cancer patients who were at the end-of-life between August 2011 and August 2016, and found that 83 patients (16.3%) died within 3 days after admission to our institute. We divided the deceased patients into those who died within 3 days (early death group) and those who died after more than 4 days (non-early death group) after admission. Prevalence of delirium, cancer pain, dyspnea, nausea and vomiting, and fatigue patients showed no significant differences. Mean hydration at the end of life was significantly more per infusion for early death group than non-early death group. Continuous sedation and mean opioid use was significantly less for early death group than non-early death group. The risk factor of age, sex, clinical stage, histological state, overtreatment of chemotherapy, comorbidity had no significant associated with early death. The primary site of cancer, the number of metastatic sites, the consciousness level, and the performance status might be predictors for early death after admission in advanced cancer patients at the end-of-life.