The invention discloses a crosswise double-column supporting type superstructure of an unmanned surface vehicle. Two fully-closed struts are symmetrically arranged on a deck of a main vehicle body in the left-and-right width direction, the center of the two struts is located on the midship portion or at the position which is located in front of the midship by (1/8-1/6) L, L is the designed waterline length of the main vehicle body, the contour line between the front-most edge of the each strut and the rear-most edge of the strut from top to bottom is a quadratic parabola, and the area of the horizontal cross sections of the two struts decreases gradually from top to bottom. A first-layer perception platform and a second-layer perception platform located over the first perception platform are arranged at the top of each strut, and the first-layer perception platforms are connected with the second-layer perception platforms through connecting columns to form a composite framework of the perception platforms. Thus, perception equipment can be better arranged, the longitudinal stability of sailing of the vehicle body can be enhanced, and the sailing performance and the self-righting performance of the unmanned surface vehicle during wave sailing are enhanced.