Needle-like pain within the left chest needs to be clarified as soon as possible. Depending on the duration of the pain and the accompanying symptoms, the following conditions can be considered. 1. First of all, it is necessary to exclude whether it is a relevant lesion of the heart. Such as coronary atherosclerosis caused angina pectoris, due to insufficient blood supply of coronary arteries, transient stenosis, spasm, which will lead to the anterior region of the heart like pins and needles pain. And myocardial injury caused by inflammation of cardiomyocytes, myocarditis, acute and chronic pericardial inflammation may also lead to needle-like pain in the left chest. 2. Secondly, we need to consider whether it is a respiratory disease, if the patient has pneumothorax, extensive pleurisy, pleural effusion, there will also be left chest pain like pins and needles, which lasts for a few seconds. 3. In addition, it is also necessary to consider whether it is a viral infection caused by herpes zoster or intercostal neuritis caused by neuralgia, muscle pain and other conditions. If a female patient has left chest pins and needles pain, you also need to consider whether it is a breast disease. The left side of the chest because of the heart and lungs, these important organs, so when the left side of the chest pin prick pain need to pay close attention to the patient as soon as possible to the regular hospital for the appropriate examination in order to clarify the condition.