Objective To discuss the characteristics of the time phases during the gait support period of normal walking of football players.Method To apply foot pressure measurement device to measure the gait cycles of normal walking of football players and college students

and compare and analyze the time phases of gait support period of the same foot and both feet of the two.Results The time of whole foot on the ground of average college students was markedly longer than that of the football players（P<0.05）.The time proportion of foot aloof from the ground of the football players was markedly more than that of the average college students（P<0.05）.The time proportion of whole foot on the ground of the both feet of the football players was markedly less than that of the average college students（P<0.05）.Conclusion Long training of football players causes changes in the proportions of time phases of the gait support period

which are shown as a decrease of the time of the phase of whole foot on the ground and an increase of the time of the phase of foot aloof from the ground.These changes are conducive to the protection of front foot of the football players and will lessen any damage to the front foot.An analysis of the changes of time phases can help ascertain the degree of injuries of football players and the state of post-injury recuperation.Thus the analysis of foot time phases has certain clinical value on the prevention of ankle injuries of football players.