In this study,each mandibular tooth was loaded vertically,the strains of apical alveolar bone surfaces of the loaded tooth and the adjacent teeth were measured.The data were interpreted in order to find the occlusal force transmission pattern by polynomial regression fit method.The result indicates that under loading condition the occlusal force is transmitted to alveolar bone by peridental membrane and dispersed in the adjacent area.The force transmission and dispersion of the bilaterally same teeth on both sides follow the same rule and cloud were be described by 3 powers polynomial regression curve.The nearer the loaded tooth,the higher the strains of the alveolar bone and vice versa The force gradually tapers off to zero in the position of the third adjacent tooth.