160 cases of x-ray films of male foot have been studied with a view to examine thesupernumerary foot bone, the number of sesamoid bone beneath the head of metatarsus,the correlation of certain foot bone and the cortical thickness of metatarsus. The supernumerary bone in the foot is quite large in number (35%), among which theaccessory scaphoid (14.4%), the accessory fibula (8.75%), the intermetatarsal bone (4.37%)and the os trigonum (2.5%) are most frequently found. Their number, position, shapeand dimensions are quite different. The sesamoid bone beneath the metatarsal head may be absent: occasionally it maybe fissured into two pieces. In one case, its maximum number reaches as many as eight. The study of the correlation of certain foot bone shows: (1) The mean value of the intermetatarsal angle between Ⅰ and Ⅱ metatarsus isa approximately 10?(min. 3--4, max. 15?), left side 9.14?+2.4?, right side 9.75??2.34?. (2) The mean value of the intermetatarso-digital angle of hallux is approximately18--19, (min. 8--9?, max. 30?), left side 19.35??15.4?, right side 18.71??4.9?. (3) The mean value of the Bohler's angle is apporximately 30?, (min. 12?, max.65?), left side 32.03?+12.9?, right side 37.21??11.75?. (4) The mean value of the breadth of protruding scaphoid tuberosity is 0.6 cm,(min. 0.1 cm, max. 1.3 cm.). (5) The head of the first metatarsus is frequently lying proximal to the second.Their distance varies from 0.9 cm. to+0.5 cm. The cortex of the second metatarsus in the thickest, its medial side is thicker thanthe lateral side. The thickness of Ⅰ, Ⅲ, Ⅳ and Ⅴ metatarsus decreases in order. The above mentioned findings are discussed anatomically.