A hard lump in the breast is medically known as a breast lump. Breast lumps are an important manifestation of breast cancer, but not all breast lumps are necessarily breast cancer. After touching a lump in the breast, you need to determine the following two things: 1. Make sure the hard lump you touch is a medical lump, because some hard lumps touched are not real breast lumps, but local glandular thickening due to breast enlargement, so when you touch it, it feels like a long lump, you can make a comprehensive judgment through professional palpation or auxiliary examinations such as ultrasound or mammography; 2. For benign nodules, we will judge whether they need to receive treatment according to their size; for tumors that are clearly or clinically suspected to be malignant, they need to be treated with surgery at an early stage. Therefore, for hard lumps in the breast, what needs to be done is to seek medical attention in a timely manner, clarify their nature through necessary auxiliary methods, and then judge the next step of treatment plan.