Breast nodules with aspect ratio greater than 1 are suspected to be malignant, and the probability of their benignity needs to be considered in conjunction with a number of factors. To determine whether a breast nodule is benign or malignant, it is important to look not only at the aspect ratio of the breast nodule, but also at the other clinical features of the breast nodule, such as whether the edge of the nodule is clear, whether there are burrs, whether there is obvious calcification inside the nodule, and whether there is obvious blood flow inside the nodule. Therefore, if the aspect ratio of a breast nodule is greater than 1, it may be a benign nodule or a malignant nodule, and its chance of being benign needs to be considered in combination with a number of factors. If the aspect ratio of breast nodule is greater than 1, it is recommended to cooperate with a professional breast doctor to conduct a systematic examination as soon as possible, and make a comprehensive judgment and analysis together with other clinical features, so as to determine the nature of the breast nodule.