The deform of slipper pair bottom surface should not be neglected while designing the connecting rod structure in camshaft connecting rod type of low speed high torque hydraulic motors. The finite element analysis was performed on connecting rod with the help of ANSYS, and the problems that should be noticed while manufacturing were pointed out. The influence of rotating angle on stress, total strain and shape deform of the connecting rod structure can be neglected. The cross section shape and depth of oil cavity on slipper pad must be fulfilled to guarantee the function of hydrostatic bearing slipper pairs.