Objective To analyze the age, gender and cause of death of died patients in a hospital from 2013 to 2019, so as to provide evidence for medical resource allocation and disease prevention. Methods The first page data of hospitalized medical records from 2013 to 2019 in the hospital were retrieved, and the main diagnostic codes were used to analyze the cause of death. Results From 2013 to 2019, 1 478 patients died and the average mortality rate was 0.43%, declining year by year. The mortality rate of male patients (0.46%) was higher than that of female patients (0.39%). The top five causes of death were tumor (40.12%), respiratory system disease (21.58%), circulatory system disease (17.25%), digestive system disease (7.71%), injury poisoning and other consequences of external causes (3.18%). The causes of death in different age groups were different. In patients of 30 years old and below, except for tumors, the proportion of perinatal diseases was the largest, most of which were newborns (32.39%). In patients of 3180 years old, the proportion of tumors was the largest. In patients of over 80 years old, the proportion of respiratory diseases was the largest. Conclusion  We should pay more attention to the treatment of newborn diseases, male health, and strengthen the prevention and control of the chronic non-infectious diseases such as tumor, or diseases of respiratory system, circulatory system and digestive system.