Many diseases are major causes of the sitting posture which are deeply related to the abnormality of the body pressure distribution.A new type of conductive rubber sensor is used to develop a dynamic contact pressure measuring system of body pressure distribution with 64 points.Body pressure is measured through the system in 1 normal individual and 3 who had trauma in lumbar.Eexperimental results show that the body pressure of the people who had trauma in lumbar is not balanceable.Using this system can implement a dynamic

real time measurement for the distribution of pressure between the body and chair.The results indicate that the scheme of the system is reasonable and feasible.