To study the contact stress distribution and contact surface abrasion of the pillow block for the miter gate，we build the calculation model of the contact stress and contact surface of the pillow block based on the empirical formula and the general formula of Archard abrasion calculation，taking the two-dimensional model of the pillow block as the research object.Then we obtain the magnitude and distribution of contact stress of the pillow block under different support reaction forces of main beams，and the change distribution of contact surface abrasion under different rotational speeds and interference conditions.The results show that the contact stress of the pillow block is approximately symmetrically distributed on both sides of the initial line contact position，and increases with the rising support reaction force of the main beam.The stress of the miter gate is mainly concentrated on the axis of the main beam and decreases sharply among the beams.The abrasion amount of the contact surface rises with the increase in the rotational speed of the gate and the fit interference of the pillow block，and the maximum abrasion depth shifts to the downstream side.