PROBLEM TO BE SOLVED: To eliminate or largely reduce a problem of a large amount of excrement adhered on a user body and achieve both comfort property and cost reduction.SOLUTION: The care diaper auxiliary sheet includes: a sheet body 2 arranged with plural sewing parts J1... located at plural positions in a right/left direction Fw of a sheet material Sc using a non-woven fabric C and sewing a rubber yarn 3 along a front/rear direction Fs and formed with a slit 4 arranged at a center position Xc in the right/left direction Fw, in the front/rear direction Fs, and a front adhesion part 5f and rear adhesion part 5r arranged near a front end side 2nf and a rear end side 2nr on a non-contact face 2n as a rear face of a skin contact face 2s of the sheet body 2, along the front end side 2nf and the rear end side 2nr, and having a predetermined width. The plural sewing parts J1... contain sewing parts J1, J2 arranged near both right/left sides of the slit 4, and outer sewing parts JP, JQ arranged near right/left end sides 2p, 2q of the sheet body 2 and having high repulsive force.
