The methods of determining the height of the foot arch include self-measurement method and X-ray distance measurement method. 1. Self-measurement method: Self-judgment of the height of the arch of the foot can be soaked in water, respectively, stepped on white paper, through the shape of the footprints left behind by the white paper to judge, footprints on the inner side of the convex, the middle of the normal plantar imprints, suggesting that the normal arch of the foot; foot prints for the whole plantar, the medial side of the no obvious convex, suggesting that the flat feet; foot prints of the forefoot and the heel parts of the significant, the medial side of the convex shape significantly expanding, suggesting that the foot with high arches. 2. X-ray distance measurement: the height of the arch can also be determined by X-ray distance measurement. If the angle between the mid-axis of the talus and the mid-axis of the first metatarsal is within the range of 0-5 degrees in the orthopedic X-ray, it suggests a normal arch or a flat foot; if it is 5-10 degrees, it suggests a mildly high arch; if it is greater than 20 degrees, it suggests a high arch; if the orthopedic X-ray shows that the arch has disappeared, and that the longitudinal axis of the heel bone and the talar axis have become larger, it suggests a flat foot. In order to detect foot arch disease in time, it is recommended to have regular medical checkups, and to have regular treatment as soon as possible after discovery.