To reduce the inclination of a slide upon eccentric loading in a press machine.

Disclosed is a slide inclination reduction device in a press machine, wherein, in the right-left and front-rear confronted respective faces of a slide 7, 16 of hydrostatic bearings are provided at the four corners, respectively, and, the device is provided with a control section 17, in the case a rotary moment M is generated by eccentricity when the slide 7 is lowered, which drives the hydrostatic bearings to a direction canceling the rotary moment M.