The present invention provides a pulse wave detecting device capable of improving pulse wave detection accuracy and a vital information measuring device including the pulse wave detecting device. The pulse wave detecting device 100 includes a sensor section 6 in which two element rows consisting of a plurality of pressure detecting elements arranged in a direction B are arranged in a direction A perpendicular to the direction B, and an air bag 2pressing the sensor section 6 to a body surface in a state that the direction B intersects a direction in which an artery below the body surface of a living body. An arrangement interval between the two element rows in the direction A is 5 mm or more and 15 mm or less.
