Pain is a complex physiological and psychological activity and is the most common clinical symptom. It includes the “pain” sensation caused by injury, stimulation, and the painful response of the body to injurious stimuli. Moderate pain is persistent pain that affects rest, requires painkillers, and disturbs sleep. The World Health Organization (WHO) classifies the degree of pain as: O degree: no pain. Degree I: Mild pain, intermittent pain, without medication. Grade II: Moderate pain, which is constant and affects rest and requires painkillers. Degree III: Severe pain, continuous pain, cannot relieve pain without medication. IV degree: severe pain, which is continuous severe pain with changes in blood pressure and pulse rate. Chinese medicine analyzes the etiology of moderate pain Chinese medicine believes that cancer pain occurs mainly because of the internal accumulation of evil toxins, stagnation of qi and blood stasis, and pain if it does not pass. Relaxation metatarsalgia is moderate pain. The etiology of moderate pain is due to: i. The disease is caused by the congenital short 1st metatarsal bone, which cannot bear weight effectively and needs to be replaced by the 2nd or 3rd metatarsal bone. ii. II. Pathogenesis Mostly occurs on the basis of congenital 1st metatarsal deformity, such as 1st metatarsal is too short, inversion or abnormal frequent activities, etc., because the 1st metatarsal cannot bear weight effectively and needs to be replaced by the 2nd or 3rd metatarsal. Under normal circumstances, the interosseous muscles contract to bring the metatarsal heads together. If the interosseous muscles atrophy and weaken due to factors such as weight gain, long distance walking, strenuous exercise, or weakness of the foot after disease, the stability between the metatarsal heads decreases, resulting in the collapse of the transverse arch of the foot and the relaxation of the transverse ligament between the metatarsal heads, then pain occurs.