The invention discloses a weighing, spring regulating and detecting device for a bogey of a railway locomotive. The device comprises a hydraulic system and a detection system, wherein in the hydraulic system, a mechanical component is provided with a guide rail, a weighing rail and a load beam, the load beam is arranged above the weighing rail, the guide rail is installed at the front side of the weighing rail, the weighing rail can move up and down under the action of the hydraulic system, and the load beam can move up and down under the action of the hydraulic system and can pressurize the bogey through a hydraulic cylinder installed on the load beam; and the detection system comprises multiple wheel load measuring units, each wheel load measuring unit respectively corresponds to the wheel of the bogey, each wheel load measuring unit is provided with a pressure sensor, the wheel load measuring units are arranged below the weighing rail, and the wheel load measuring units can horizontally move along the direction parallel to the weighing rail under the action of the hydraulic system. In the invention, the whole load pressure is implemented on the bogey after the bogey is assembled, and then wheel load detection is carried out, so as to inhibit the axle load transfer in the running process of the locomotive to the fullest extent.