In order to study the position of initial and final contact during normal walking of young adults and its role in gait analysis, plantar pressures of 57 young adults aged 18-24 with the same shoes were collected during 10 times of normal walking, thus the relative position of initial and final contact and the variation of the Center of Pressure trajectory in coronal plane could be calculated. The position of the most concave points at the front and rear marginal of outsole could be observed and measured after wearing for two months. Then, the correlation of the data was analyzed. The results show that there is no significant difference in the relative position of initial and final contact among multiple times of normal walking of one subject; and correlations between the contact position and the position of the most concave points, and between the contact position and the variation of the Center of Pressure trajectory are significant. It is concluded that the relative position of initial and final contact is stable for young adults during normal walking, and can be reflected as the position of the most concave points at the front and rear marginal of outsoles; the progress of walking is more smooth for people with a medial position of initial and final contact.