[PROBLEMS] To provide an underarm sweat pad which can establish a good followability to the movements of clothes when a user moves the body and a body fluid absorbent device. [MEANS FOR SOLVING PROBLEMS] An underarm sweat pad (1) comprising a sheet body for absorbing sweat and a pressure-sensitive adhesive layer for sticking to clothes, characterized in that, in the underarm sweat pad (1), a number of embossed concaves (11) are formed in both sides of a separation line (S) located at the center of the sheet body, and the embossed concaves (11) are arranged in such a manner that the intervals between adjacent embossed concaves (11) are minimized respectively along a plural number of partition lines (P1, P2, P3, P4) that are located symmetrically with respect to the separation line (S) and tilted at 10o to 80o.
