A pressure pulse wave detector comprising: a pressing member which includes a pressing face in which element arrays each including pressure detecting elements (6a, 7a) arranged in a first direction are arranged side by side in a direction intersecting with the first direction; a pressing mechanism which is configured to press the pressing face against a body surface of a living body in a state where the first direction intersects with an extension direction of an artery under the body surface; a rotation driving mechanism which is configured to rotate the pressing face around each of two axes (X, Y) which are perpendicular to a pressing direction of the pressing face pressed by the pressing mechanism and include a first axis extending in the first direction and a second axis perpendicular to the first direction; a support member which supports the pressing mechanism, the rotation driving mechanism and the pressing member; a housing (1, 101, 102) which is attached to a measurement subject and housing therein the support member; and a movement mechanism which is configured to move the support member in the first direction inside the housing by a manual operation, wherein the movement mechanism includes: a slit which extends in the first direction and is formed on an end surface on a central side of the measurement subject in a state where the housing (1, 101, 102) is attached to the wrist, among end surfaces of the housing (1, 101, 102) in a direction perpendicular to the first direction and the pressing direction; a fixation member which is fixed to the support member through a protrusion penetrating the slit and which enables an operation for moving the support member in the first direction, a slide member having a triangular prismatic protrusion that is long in the pressing direction and being fixed to the support member through a spring; and a slide rail formed in the housing (1, 101, 102), and having recesses against which the protrusion of the slide member is urged such that when a force is applied to the fixation member in the first direction, the protrusion of the slide member moves along a slope of one of the recesses of the slide rail to engange with an adjacent recess. a pressing member which includes a pressing face in which element arrays each including pressure detecting elements (6a, 7a) arranged in a first direction are arranged side by side in a direction intersecting with the first direction; a pressing mechanism which is configured to press the pressing face against a body surface of a living body in a state where the first direction intersects with an extension direction of an artery under the body surface; a rotation driving mechanism which is configured to rotate the pressing face around each of two axes (X, Y) which are perpendicular to a pressing direction of the pressing face pressed by the pressing mechanism and include a first axis extending in the first direction and a second axis perpendicular to the first direction; a support member which supports the pressing mechanism, the rotation driving mechanism and the pressing member; a housing (1, 101, 102) which is attached to a measurement subject and housing therein the support member; and a movement mechanism which is configured to move the support member in the first direction inside the housing by a manual operation, wherein the movement mechanism includes: a slit which extends in the first direction and is formed on an end surface on a central side of the measurement subject in a state where the housing (1, 101, 102) is attached to the wrist, among end surfaces of the housing (1, 101, 102) in a direction perpendicular to the first direction and the pressing direction; a fixation member which is fixed to the support member through a protrusion penetrating the slit and which enables an operation for moving the support member in the first direction, a slide member having a triangular prismatic protrusion that is long in the pressing direction and being fixed to the support member through a spring; and a slide rail formed in the housing (1, 101, 102), and having recesses against which the protrusion of the slide member is urged such that when a force is applied to the fixation member in the first direction, the protrusion of the slide member moves along a slope of one of the recesses of the slide rail to engange with an adjacent recess. a slit which extends in the first direction and is formed on an end surface on a central side of the measurement subject in a state where the housing (1, 101, 102) is attached to the wrist, among end surfaces of the housing (1, 101, 102) in a direction perpendicular to the first direction and the pressing direction; a fixation member which is fixed to the support member through a protrusion penetrating the slit and which enables an operation for moving the support member in the first direction, a slide member having a triangular prismatic protrusion that is long in the pressing direction and being fixed to the support member through a spring; and a slide rail formed in the housing (1, 101, 102), and having recesses against which the protrusion of the slide member is urged such that when a force is applied to the fixation member in the first direction, the protrusion of the slide member moves along a slope of one of the recesses of the slide rail to engange with an adjacent recess.