An absorbent article comprising: a crotch portion; a front side portion and a rear side portion that are extended toward a front side and a rear side of the crotch portion, respectively; an absorbent body provided at a front and rear direction range including the crotch portion; a topsheet of non-woven fabrics that covers a top side of the absorbent body; and an intermediate sheet of non-woven fabrics disposed between the topsheet and the absorbent body, wherein a concave groove with a predetermined width that is concaved from a top surface to a back side or a slit with a predetermined width is formed in the absorbent body at least at the crotch portion to extend in a front and rear direction, and wherein the topsheet includes a fall-in portion that is fallen in the concave groove or the slit of the absorbent body, and the fall-in portion comprises convex portions configured to be provided at least at a part of the fall-in portion by extruding the topsheet from the back side to the top side by embossing, the convex portions being aligned with a space therebetween in a width direction and in the front and rear direction, respectively, characterized in that portions of the topsheet between the adjacent convex portions in the width direction and in the front and rear direction are pressed and welded with the intermediate sheet to form a number of topsheet bonding portions as intermittent bonding patterns in the width direction and in the front and rear direction, the topsheet bonding portions being aligned in the width direction with a space therebetween at a region between the convex portions that are adjacent in the front and rear direction, the topsheet and the intermediate sheet are not welded at the space between the topsheet bonding portions in the width direction to form a pressed portion which is more compressed than both sides in the front and rear direction, and a space is formed between a portion of the topsheet that has the convex portion and the intermediate sheet. a crotch portion; a front side portion and a rear side portion that are extended toward a front side and a rear side of the crotch portion, respectively; an absorbent body provided at a front and rear direction range including the crotch portion; a topsheet of non-woven fabrics that covers a top side of the absorbent body; and an intermediate sheet of non-woven fabrics disposed between the topsheet and the absorbent body, wherein a concave groove with a predetermined width that is concaved from a top surface to a back side or a slit with a predetermined width is formed in the absorbent body at least at the crotch portion to extend in a front and rear direction, and wherein the topsheet includes a fall-in portion that is fallen in the concave groove or the slit of the absorbent body, and the fall-in portion comprises convex portions configured to be provided at least at a part of the fall-in portion by extruding the topsheet from the back side to the top side by embossing, the convex portions being aligned with a space therebetween in a width direction and in the front and rear direction, respectively, characterized in that portions of the topsheet between the adjacent convex portions in the width direction and in the front and rear direction are pressed and welded with the intermediate sheet to form a number of topsheet bonding portions as intermittent bonding patterns in the width direction and in the front and rear direction, the topsheet bonding portions being aligned in the width direction with a space therebetween at a region between the convex portions that are adjacent in the front and rear direction, the topsheet and the intermediate sheet are not welded at the space between the topsheet bonding portions in the width direction to form a pressed portion which is more compressed than both sides in the front and rear direction, and a space is formed between a portion of the topsheet that has the convex portion and the intermediate sheet.