The Hand Sanli acupoint is useful for relieving unfavorable upper limb movement caused by insufficient cerebral blood supply. Hand Sanli belongs to the Hand Yangming Large Intestine Meridian and is located on the radial side of the back of the forearm, on the line between Yangxi and Quchi, 2 inches below the elbow cross stripe. It is used to treat toothache and cheek swelling, upper limb paralysis, abdominal pain, diarrhea, etc. It is often paired with Quchi point and biceps point to treat upper limb paralysis. Cerebral insufficiency of blood supply is common in limbs with unfavorable limb movement. Acupuncture on the three li of the hand has a certain alleviating effect, but it can’t replace other treatments for cerebral insufficiency of blood supply. Acupuncture hand three miles need to be operated by professional acupuncturists, individuals should not operate on their own for the patient, cerebral insufficiency of blood supply symptoms need to consult a doctor in a timely manner, for standardized treatment, in order to avoid delaying the condition.