The correct name for invasive ductal carcinoma of the breast is invasive ductal carcinoma of the breast. It is not recommended for such patients to have intercourse when they are weak after surgery and radiotherapy. After surgery and radiotherapy, patients with invasive ductal carcinoma of the breast will suffer from discomfort such as vomiting, loss of appetite and skeletal and muscle pains, etc. Their physical condition is relatively weak, so it is not recommended for them to engage in physical activities including intercourse in the short term. After the physical condition returns to normal, it is possible to have intercourse. It is suggested that patients with invasive ductal carcinoma of breast should have more rest and appropriate exercise after surgery and radiotherapy. Take light and easy-to-digest food in diet and avoid eating cold and spicy food. Actively cooperate with doctor’s treatment, and suggest patients to consult doctor in time if they feel unwell.