Inability to straighten the toes and bend them downward. There are many causes such as soft tissue injury, gout, tenosynovitis of the toes, tendon adhesion, rheumatoid arthritis and so on. Ancillary tests such as X-ray, blood sedimentation, rheumatoid factor test and related surgical examination should be done. Minimize walking, rest more, shoes and socks should be comfortable and fit the feet, oral blood circulation and blood stasis of Chinese medicine to regulate. Soak feet in hot water frequently to promote blood circulation, elevate the affected feet when resting and avoid cold, dampness and pressure. Eat more food with high calcium content and get more sunshine.