The invention provides a method for eliminating cross fold defects of target steel and belongs to the technical field of steel rolling. The method comprises the steps that weight proportion value information of target elements in the target steel is obtained; the weight proportion value information and a first value interval are compared, and whether the weight proportion value information is in the first value interval or not is judged; the reeling temperature and the finish rolling temperature of the target steel are obtained; the temperature difference of the reeling temperature and the finish rolling temperature is obtained; the temperature difference and a second value interval are compared, and whether the temperature difference is in the second value interval or not is judged; and if the weight proportion value information is in the first value interval and the temperature difference is in the second value interval, the target steel is drawn and straightened to eliminate the cross fold defects of the target steel through drawing and straightening. According to the method, the cross fold defects in the target steel are eliminated, and the method has the good technical effectsof being simple.