The invention discloses a horizontal fixed-angle-deflection bearing platform for fixed-point full-plane scanning detection. A wedge slot and a locking bolt are arranged on a cover of the platform, and a metal block for limiting a largest deflection angle is arranged on the inner surface of the platform; a lower bottom plate is embedded and installed on the bottom of a metal shell; a fixed rod is arranged on an upper bottom plate which is provided with a limit protection switch; a direct current reduction motor is arranged on the back of the upper bottom plate, and a stirring pull rod is arranged on the front surface of the upper bottom plate; a pressure-loaded bearing is connected with a shaft sleeve; and an indexing control signal circuit board is fixed on the front surface of the upper bottom plate, and an indexing signal rotating arm is fixed on the shaft sleeve and is in friction contact with the indexing control signal circuit board. The horizontal fixed-angle-deflection bearing platform has the characteristics of being strong in bearing capacity, stable in rotation, accurate in deflection angle, not afraid of raining, and the like; in addition, a radar detector does not need to be moved in detection. The horizontal fixed-angle-deflection bearing platform has the advantages of being high in automation degree, high in detection speed and accurate in time-division detection area, avoiding leakage and repeatability of the detection, being capable of generating organism distribution planar graphs and the like.