The present invention is applicable to the technical field of data application, and provides an abnormal electric quantity data repairing method for an electricity consumption information collecting system, and a terminal device. The method comprises the steps of: acquiring the electric quantity of each user on the target date collected by the electricity consumption information collecting system;detecting whether the electric quantity of each user is abnormal; if detecting that the electric quantity of a target user is abnormal, acquiring the load data of the target user on the target date,wherein the target user is any one of the users; according to the load data, determining a load data defect degree of the target user; and according to the load data defect degree, the load data and the target data, determining the electric quantity repair value of the target user. According to the method provided by the present invention, the abnormal electric quantity can be detected simply andaccurately, and the detected abnormal electric quantity is repaired, so that the accuracy of various application analysis based on the electric quantity data can be improved, and without manual intervention in the whole process, a lot of human resources are saved, and the cost is reduced.