Left back pain every day is not necessarily caused by coronary heart disease. Coronary heart disease caused by left back pain is generally angina attack pain radiates to the left back of the site of the pain, pain is characterized by a sudden onset of pain, pain time is generally in 1 ~ 5 minutes, the patient is often accompanied by panic attacks, shortness of breath, chest tightness and other symptoms of heart disease, simple left back pain is generally not caused by coronary heart disease. The reason for the left back pain every day may be overwork, bruises, cold and other reasons. In addition, herpes zoster may also cause pain in this area, and tumors and cysts can also cause pain by pressing on the nerves. There are many other causes of left back pain, you need to consult a doctor in a timely manner, according to the condition of the doctor, to formulate individualized diagnosis and treatment plan to avoid delaying the condition.