[Problem] To reduce roll paper curl of a sanitary thin paper roll[Means for Solving Problem] A sanitary thin paper roll in the present invention comprising two or more ply sheets for constituting a roll wherein a basis weight of a sanitary thin paper sheet on an outermost face of the roll is smaller than a basis weight of a sanitary thin paper sheet on an innermost face of the roll, and a density of the sanitary thin paper sheet on the outermost face of the roll is larger than a density of the sanitary thin paper sheet on the innermost face of the roll.