The specific manifestations of nasopharyngeal carcinoma before death are as follows: 1. respiratory failure: mainly manifested as dyspnea, open-mouth breathing, sigh-like breathing, etc. 2. circulatory failure: it can be seen on the ECG monitor that the heart rate is rapidly progressing to more than 100 times/minute at the beginning, which is a typical heart failure manifestation, and then the heart rate may rapidly decrease later, which is a declining period of failure. Therefore, the main symptoms are still signs of respiratory and circulatory failure, and other accompanying symptoms, such as headache, pain all over the body, swelling, etc.