The invention provides a melt-casting film formation process for a cellulosic resin film, by which thickness unevenness of the cellulosic resin film is suppressed in both the cross-machine direction and machine direction. Consequently the invention can provide a cellulosic resin film having high optical properties. In this process for producing the cellulosic resin film, a resin molten in an extruder (22) is extruded through a die (24) onto a rotating chill roll (28) which chills and solidifies the resin to a film (12'), in which temperature difference in the cross-machine direction of the resin sheet (12) from departing the die (24) to touching the chill roll (28) is regulated within 10.degree. C.