The manifestations of latent stage of breast cancer are not obvious, and there may be nipple discharge, breast lumps, nipple skin lesions and other phenomena. 1. Nipple overflow: in the latent stage of breast cancer, nipple overflow can be manifested, especially single-hole bloody overflow is more frequent. 2. Breast lump: in the latent stage of breast cancer, a lump can be found in the breast by palpation, and the shape and mobility of the lump can also be judged, which is usually not accompanied by pain in the early stage. 3. Nipple skin lesions: latent stage of breast cancer may also cause nipple skin lesions, such as cellulite, dimple sign, etc., which may even lead to nipple skewing. There may also be axillary lymph node enlargement and paraneoplastic syndrome, etc. It is recommended that patients should go to the hospital in time to improve the examination and take standardized treatment under the guidance of doctors after diagnosis, and should not take any random treatment in order not to lead to adverse consequences.