Sudden back pain at night can be caused by the following reasons: first, heart disease, when the heart has a heart attack or angina pectoris, it can be radiating pain in the left back at the shoulder blade, which can be accompanied by discomfort in the anterior region of the heart, and this time, we should check the cardiac ultrasound, electrocardiogram, and angiography for early diagnosis and treatment. Second, cholecystitis and gallbladder stones, in cholecystitis and gallbladder stones in acute attacks, can also be radiating the right side of the back of the scapula pain, can be accompanied by the right upper abdominal pain, this time to check the gallbladder ultrasound, CT for diagnosis and treatment. Third, herpes zoster, in the early stage of herpes zoster can have sudden pain on one side of the back, to observe the changes in the condition, in the incubation period of 1-2 weeks later, herpes can appear, then to the dermatology department for diagnosis and treatment.