The invention provides a physiological sanitary napkin (1A), which comprises an absorbent main body (5) and a pair of leakproof walls (7) located on two sides (5c) in the length direction (Y direction) of the absorbent main body (5), the absorbent main body (5) has a right side sheet material (2), a back side sheet material (3) and an absorber (4) between two sheet materials (2, 3), the pair of leakproof walls (7) have a pair of basal wall parts (71) and a planar telescoping part (72) connected with the upper ends (71a) thereof respectively. the absorber (4) has a protruded middle high part (40) on a center area (CT) in the width direction (X direction), the middle high part (40) comprises a front middle high part (41) and a rear middle high part (42) which are separated, and the front middle high part (41) is formed at the drain part area (a). A pair of middle fixed parts (7c) are arranged at the outside in the width direction of an area with the rear middle high part (42).
