ve To provide hand surgery with the regularity of concomitant relationship between the arteries and veins of the hand. Method Concomitant relationship between the arteries and veins of the hand were observed in 10 sides decicolor cast specimens and stuffing specimens perfused with hyperchlororinylacetic ether or emulsoid respectively. Results Compactly concomitant relationship was observed in the superficialand the deep arcus vasculosi, the palmal metacarpal vessels and the common palmal digital vessels. In the palm and the opisthenar, the superficial vessels were not concomitant or not compactly concomitant, so were the vessels of the maniphalanx. Conclusions The distribution regularity between the arteries and veins of the hand are showed as follows: Like a network, vessels are not concomitant in the superficial laminae of the hand. However, deeper to the partes profunda of the hand, more compactly concomitant relationship between the arteries and veins. The vessels of the maniphalanx are not concomitant or not compactly concomitant