It is not possible to generalize how long it takes from the initial stage of inflammatory breast cancer to the late stage, which is related to the severity of the disease and the effect of individual treatment, so the time to the late stage will all be different. Inflammatory breast cancer is a rare type of highly invasive breast cancer, which belongs to the higher degree of malignancy. The main manifestations are diffuse erythema, edema, cellulite, pain and other symptoms. If patients with early inflammatory breast cancer are considered clinically cured after 5-10 years without recurrence after effective treatment, they will not develop into advanced stage. If patients with inflammatory breast cancer do not cooperate with the treatment in the early stage and develop recurrence and metastasis, they may develop into advanced stage in 1-2 years. It is recommended that patients with early inflammatory breast cancer should go to the hospital in time for chemotherapy, radiotherapy and targeted therapy to control the development of the disease and prolong the life of the patients. In addition, patients are advised to go to the hospital regularly for follow-up, develop a good lifestyle and diet, and take appropriate exercise to strengthen the immunity.