A computer-implemented correction method for a scatter signal caused by a wedge filter, comprising: S10: performing an air scan by using CT equipment, and calculating a relative intensity of a scatter signal caused by a wedge filter in the air scan according to an air scan result, denoted as an air scan scatter signal relative intensity W air, S20: performing an object scan on a plurality of experimental objects by using the CT equipment, and calculating theoretical scatter signal intensities W theo of the experimental objects in the object scan according to the air scan scatter signal relative intensity W air, the air scan result, and object scan results of the experimental objects, S30: fitting the theoretical scatter signal intensities W theo of the experimental objects in the object scan and measured scatter signal intensities W meas of the experimental objects in the object scan according to the object scan results of the experimental objects, to obtain a fitting formula for calculating a scatter signal intensity estimation W act, and S40: performing an object scan on an actual object by using the CT equipment, calculating a theoretical scatter signal intensity W theo of the actual object in the object scan according to the air scan scatter signal relative intensity W air, the air scan result, and an object scan result of the actual object, calculating a scatter signal intensity estimation W act of the actual object in the object scan according to the fitting formula and the theoretical scatter signal intensity W theo of the actual object in the object scan, and correcting the scan results according to a difference between the scatter signal intensity estimation W act of the actual object in the object scan and the theoretical scatter signal intensity W theo of the actual object in the object scan. S10: performing an air scan by using CT equipment, and calculating a relative intensity of a scatter signal caused by a wedge filter in the air scan according to an air scan result, denoted as an air scan scatter signal relative intensity W air, S20: performing an object scan on a plurality of experimental objects by using the CT equipment, and calculating theoretical scatter signal intensities W theo of the experimental objects in the object scan according to the air scan scatter signal relative intensity W air, the air scan result, and object scan results of the experimental objects, S30: fitting the theoretical scatter signal intensities W theo of the experimental objects in the object scan and measured scatter signal intensities W meas of the experimental objects in the object scan according to the object scan results of the experimental objects, to obtain a fitting formula for calculating a scatter signal intensity estimation W act, and S40: performing an object scan on an actual object by using the CT equipment, calculating a theoretical scatter signal intensity W theo of the actual object in the object scan according to the air scan scatter signal relative intensity W air, the air scan result, and an object scan result of the actual object, calculating a scatter signal intensity estimation W act of the actual object in the object scan according to the fitting formula and the theoretical scatter signal intensity W theo of the actual object in the object scan, and correcting the scan results according to a difference between the scatter signal intensity estimation W act of the actual object in the object scan and the theoretical scatter signal intensity W theo of the actual object in the object scan.