Recurrent mouth ulcers in women are usually recurrent aphthous ulcers and are not a precursor to serious illness. Recurrent mouth ulcers in women are usually recurrent aphthous ulcers. The ulcer episodes are limited to the oral mucosa and are characterized by periodic recurrence and self-limitation. The ulcers are mostly round or oval, with neat edges, surrounded by a narrow red halo and obvious pain, and can occur in any part of the oral mucosa, and usually heal on their own in 7-10 days. Patients are often afraid of cancer, and it is usually necessary to explain to patients that recurrent aphthous ulcers are not cancerous. Cancerous ulcers are characterized by deep, cauliflower-shaped ulcers with hard nodules around and at the base and irregular margins. Consultation with a medical professional is specifically recommended.