To determine whether the foot is inverted or ectropion, the following methods can be used: first, foot inversion: if the patient is a newborn, the feet appear to be inward and inward, the heel is small and inward, the Achilles tendon is tiny, the outer skin is tight, the leg muscles are atrophied, the forefoot can not be outwardly rolled and outwardly rolled, there is abnormality in the inner and outer ankles, and the foot can not be dorsally extended, and the degree of deformity of the inversion of the foot can be confirmed by shooting the X-ray film, and through the above it can be judged to be inverted foot. Secondly, foot exostosis: if the patient after birth, the ankle joints of both feet are completely flaccid, the back of the foot is against the front of the calf, the foot can be pulled in the neutral position, the anterior tibialis muscle is tense, and sometimes there are flaccid people, which indicates the existence of foot exostosis. Through this method, it is possible to confirm the presence of inversion or eversion of the foot. Early diagnosis and early treatment can lead to rapid relief of clinical symptoms.