The invention discloses a correction method for filter stick end density distortion detection by a microwave density meter. The method includes the following steps: carrying out density detection on afilter stick by using the characteristic of the microwave density meter that detection data of a non-end part of a filter stick is accurate to obtain distorted detection data of an end of the filterstick; changing the original end of the filter stick to a non-end part for measurement to obtain non-distorted detection data of the original end of the filter stick; performing regression analysis onthe distorted detection data and the non-distorted detection data of the same detection unit, and establishing a data correction mathematical model of the unit; and establishing data correction mathematical models of all detection units that need to be corrected, measuring distortion data obtained from cigarettes of the same specification, and correcting the distortion data by using the corresponding data correction mathematical models to obtain accurate data. The method is not affected by the uniformity of the axial density of the object, and has the advantages of accurate compensation, strong applicability and convenient operation.