Complications of novel coronavirus infection include sepsis, shock, uncorrectable metabolic acidosis, coagulopathy, acute respiratory distress syndrome, and a host of other complications. The pneumonia caused by the new coronavirus has a very serious impact on the body, causing early symptoms of common cold, such as nasal congestion, runny nose, sneezing, etc., but as the disease progresses, it can lead to significant fever, headache, muscle pain, weakness and other systemic symptoms, some patients may also develop diarrhea, progressive dyspnea, respiratory failure, and may even be accompanied by acute kidney Some patients may also develop diarrhea, progressive dyspnea, respiratory failure, and even acute kidney injury, resulting in life-threatening illness. The new coronavirus is very harmful to the human body, and it is even more harmful to elderly patients because their immunity is weak and most of them will die clinically, so attention must be paid.