The pain in the big tendon of the right foot can be caused by Achilles tendonitis, trauma, vascular disease of the lower limbs, lumbar spine disease, gout, etc., and can be consulted in orthopedics, vascular surgery, rheumatology and immunology. 1. Achilles tendonitis: after repeated strenuous stretching of the Achilles tendon, inflammatory manifestations such as localized strain injury may occur, which may result in discomfort such as pain, swelling and limitation of movement of the Achilles tendon, etc., and can be diagnosed and treated by orthopaedic surgeons. 2. Trauma: Trauma can lead to bone and soft tissue injuries in the foot, which can cause pain in the right tendon and Achilles tendon, accompanied by bruising, dysfunction and other symptoms, which can be treated in orthopedics. 3. Lumbar spine diseases: Lumbar spine diseases such as lumbar disc herniation and lumbar spinal stenosis can lead to spinal cord or nerve compression, causing numbness and pain in the right hamstring, which can be treated by orthopedics. 4. Lower extremity vascular diseases: varicose veins of the lower extremity, arterial embolism and other vascular diseases, due to local blood circulation disorders, insufficient blood supply, can cause pain in the right hamstring, can be diagnosed and treated in the Department of Vascular Surgery. 5. Gout, rheumatoid: severe gout, rheumatoid and other diseases involving the foot, can also appear in the heel tendon pain performance, need to consult the rheumatology and immunology departments for diagnosis and treatment. There are many reasons for right foot pain, if it is difficult to relieve the pain, you need to consult a doctor in time, choose the appropriate department for diagnosis and treatment, which will help to relieve the pain and other uncomfortable symptoms as soon as possible.