A biaxially stretched regenerated cellulose film, wherein a stretch ratio of the cellulose film in the transverse direction and a stretch ratio of the cellulose film in the longitudinal direction are not greater than 400%, and a ratio of the tensile strength in the longitudinal direction to that in the transverse direction is less than 1.8, and wherein the cellulose film is obtained by the method comprising the following steps: shaping a cellulose/ionic liquid solution by die extrusion, calendering or casting; entering the shaped solution into a coagulation bath to form a cellulose gel film; said coagulation bath is a mixture of an ionic liquid and a non-solvent of cellulose which is water; stretching the cellulose gel film at least one time in the transverse direction and at least one time in the longitudinal direction; when in the gel film the weight ratio of an ionic liquid solvent to water is less than 4:1, preferably 3:1, the cellulose gel film is stretched in the transverse direction and in the longitudinal direction; in drying process, further applying tension to the stretched film in the transverse and longitudinal directions, and finally obtaining regenerated cellulose film by rolling; said cellulose/ionic liquid solution is obtained by dissolving cellulose as raw material in the ionic liquid solvent; said ionic liquid solvent is an ionic liquid capable of dissolving cellulose or mixed ionic liquids capable of dissolving cellulose. wherein the cellulose film is obtained by the method comprising the following steps: shaping a cellulose/ionic liquid solution by die extrusion, calendering or casting; entering the shaped solution into a coagulation bath to form a cellulose gel film; said coagulation bath is a mixture of an ionic liquid and a non-solvent of cellulose which is water; stretching the cellulose gel film at least one time in the transverse direction and at least one time in the longitudinal direction; when in the gel film the weight ratio of an ionic liquid solvent to water is less than 4:1, preferably 3:1, the cellulose gel film is stretched in the transverse direction and in the longitudinal direction; in drying process, further applying tension to the stretched film in the transverse and longitudinal directions, and finally obtaining regenerated cellulose film by rolling; shaping a cellulose/ionic liquid solution by die extrusion, calendering or casting; entering the shaped solution into a coagulation bath to form a cellulose gel film; said coagulation bath is a mixture of an ionic liquid and a non-solvent of cellulose which is water; stretching the cellulose gel film at least one time in the transverse direction and at least one time in the longitudinal direction; when in the gel film the weight ratio of an ionic liquid solvent to water is less than 4:1, preferably 3:1, the cellulose gel film is stretched in the transverse direction and in the longitudinal direction; in drying process, further applying tension to the stretched film in the transverse and longitudinal directions, and finally obtaining regenerated cellulose film by rolling; said cellulose/ionic liquid solution is obtained by dissolving cellulose as raw material in the ionic liquid solvent; said ionic liquid solvent is an ionic liquid capable of dissolving cellulose or mixed ionic liquids capable of dissolving cellulose.