There are three meridians on the inner side of the arm, namely, the Hand Taiyin Lung Meridian, the Hand Syncopal Pericardium Meridian, and the Hand Shaoyin Heart Meridian. The three meridians start from the chest and abdomen, go through the armpits to the inner side of the arm, and end at the fingertips of the fingers. 1. Hand Taiyin Lung Meridian: It is mainly located at the upper end of the chest and inner side of the arm, as well as the end of the thumb. It is mainly used to treat symptoms such as cough, chest tightness and shortness of breath, coughing and wheezing, sore throat, etc. You can relieve the symptoms by acupuncture or massaging the points on the Lung Meridian. 2. Hand Syncope Pericardium Meridian: It mainly travels in the middle of the inner side of the arm and ends at the end of the middle finger. It can be used to treat symptoms such as chest pain, chest tightness, heartburn, axillary swelling and pain, and pain in the back of the chest and inner side of the arm. 3. Heart Meridian of the Shao-Yin of the Hand, which is mainly located under the armpit and at the lower end of the inner side of the arm. The Heart Meridian can treat symptoms such as chest pain, insomnia, palpitations (rapid heartbeat, often accompanied by panic), shoulder and arm pain, and pain in the coarseness of the ribs. If you need acupuncture treatment, you need to follow the doctor’s instructions and ask the doctor to regulate the operation, do not operate without authorization, so as not to grow adverse consequences.