A device and a method for acquiring user information are disclosed. According to an aspect of the present invention, provided is a user information acquisition device comprising: a sensing unit comprising a matrix-type pressure sensor installed on a bed, the sensing unit generating body-pressure distribution data from pressure values at multiple points, measured by the pressure sensor; a data classification unit for classifying the body-pressure distribution data according to posture; a data processing unit for detecting features of the body-pressure distribution data with regard to each body part and distinguishing same through a learning model, thereby estimating the user’s weight; a display unit for outputting to a screen the user’s weight in connection with body-pressure distribution; a body-type analysis unit for analyzing the user’s body type on the basis of the body-pressure distribution data and detecting a contour line; an air cell control unit for controlling the driving of each air cell of an air cell layer installed beneath the pressure sensor; and a correction unit for correcting at least one of the user’s body type and the user’s weight by combining corrected body-pressure distribution data generated by the sensing unit after the air cells have been driven.