A grasping treatment unit comprising: a blade having a proximal portion and a distal portion; a jaw which has a proximal portion and a distal portion, and which is openable and closable relative to the blade; a top which extends from the proximal portion to the distal portion in the blade in a state to sharpen toward the jaw, and which forms a ridge line along a longitudinal direction of the blade; and a grasping surface which extends from the proximal portion to the distal portion in the jaw in a state to be opposed to the blade, wherein the grasping surface includes: a proximal side counter portion which forms the grasping surface in a region located on a proximal side with respect to the distal portion of the jaw, the proximal side counter portion including a proximal side receiving portion on which the top can abut in a state where the blade and the jaw are closed relative to each other; and a distal side counter portion which forms the grasping surface in the distal portion of the jaw, the distal side counter portion including a recess, a proximal end of the recess being adjacent to a distal end of the proximal side receiving portion, the top and the ridge line extending toward a distal side beyond the proximal end of the recess in a state in which the blade and the jaw are closed relative to each other, the top being opposed to the recess, the recess being located on an opening direction side of the jaw relative to the proximal side receiving portion so that the distal side counter portion does not contact the top in a state where the top of the blade abuts on the proximal side receiving portion. a blade having a proximal portion and a distal portion; a jaw which has a proximal portion and a distal portion, and which is openable and closable relative to the blade; a top which extends from the proximal portion to the distal portion in the blade in a state to sharpen toward the jaw, and which forms a ridge line along a longitudinal direction of the blade; and a grasping surface which extends from the proximal portion to the distal portion in the jaw in a state to be opposed to the blade, wherein the grasping surface includes: a proximal side counter portion which forms the grasping surface in a region located on a proximal side with respect to the distal portion of the jaw, the proximal side counter portion including a proximal side receiving portion on which the top can abut in a state where the blade and the jaw are closed relative to each other; and a distal side counter portion which forms the grasping surface in the distal portion of the jaw, the distal side counter portion including a recess, a proximal end of the recess being adjacent to a distal end of the proximal side receiving portion, the top and the ridge line extending toward a distal side beyond the proximal end of the recess in a state in which the blade and the jaw are closed relative to each other, the top being opposed to the recess, the recess being located on an opening direction side of the jaw relative to the proximal side receiving portion so that the distal side counter portion does not contact the top in a state where the top of the blade abuts on the proximal side receiving portion. a proximal side counter portion which forms the grasping surface in a region located on a proximal side with respect to the distal portion of the jaw, the proximal side counter portion including a proximal side receiving portion on which the top can abut in a state where the blade and the jaw are closed relative to each other; and a distal side counter portion which forms the grasping surface in the distal portion of the jaw, the distal side counter portion including a recess, a proximal end of the recess being adjacent to a distal end of the proximal side receiving portion, the top and the ridge line extending toward a distal side beyond the proximal end of the recess in a state in which the blade and the jaw are closed relative to each other, the top being opposed to the recess, the recess being located on an opening direction side of the jaw relative to the proximal side receiving portion so that the distal side counter portion does not contact the top in a state where the top of the blade abuts on the proximal side receiving portion.