1.Cause: The plantar fascia starts from the medial aspect of the heel bone and splits into five bundles connected to the distal phalanges, and these fibers are closely connected to the surrounding dermis, transverse metatarsal ligaments, and flexor tendons. Especially in the first metatarsophalangeal joint, the dorsiflexion movement increases the tension of the plantar fascia and the longitudinal arch of the foot. The inelasticity of the plantar fascia itself allows only about 4% lengthening. The disease is often caused by repeated minor trauma and excessive tension. Recently, it is considered to be a non-inflammatory reaction and is more appropriately referred to as “plantar fascia degeneration”. Reduced ankle flexion due to tension in the Achilles tendon or gastrocnemius muscle is also associated with the development of plantar fasciitis. Obesity, excessive weight bearing, and other independent risk factors include: age, shoe discomfort, overtraining, and decreased mobility of the subtalar joint. High arches and flat feet are also important causes of plantar fasciitis. Clinical manifestations: Patients often feel initial pain, which is more pronounced in the morning or after taking the first step after a long rest, and the pain is relieved after a few steps, but increases with walking time or standing time. The pain is sharp and not radiating. Physical examination: localized pressure pain around the heel node is obvious, and pressure pain is palpable along the fascia, more obvious when the plantar fascia is tense, such as when the ankle joint is dorsiflexed. 4. Diagnosis: Weight-bearing foot radiographs are necessary to detect bone spurs and calcifications, however, autopsy shows that the spurs are mostly concentrated at the onset of the toe flexors rather than in the painful plantar fascia. 6. Treatment: For all cases, non-surgical treatment, rest, functional therapy, self-stretching exercises, heel pads, orthopedic devices, ice, NSAID, and weight loss should be the main focus. Barefoot activities as well as unsuitable foot pads and others are not recommended. Arch restoring shoes help to reduce the dorsiflexion of the first metatarsophalangeal joint and help to reduce the maximum tension on the plantar fascia.8 At 8 weeks the effect of plantar fascia stretching is better compared to the effect of Achilles tendon stretching. However, the results at 2-year follow-up were average. Other treatments included: night immobilization, prescription medications, orthotic devices, and immobilization. The role of immobilization is to prevent and correct the position of the plantar fascia and gastrocnemius. As well as the application of orthopedic appliances. Only a small percentage requires the use of local injectable medications and extracorporeal ultrasound therapy. Topical steroid injections have proven to be effective in the short term but not in the long term. The side effects are also: tears of the plantar fascia.