Two flaps in the little toe nail may be caused by trauma, heredity, and fungal infection. 1. Trauma: If the cap of the little toe is hit by a heavy object or cut by a sharp knife, two flaps of the toenail may occur. In most cases, it may return to its original shape as soon as a new nail grows. 2. Heredity: Having two flaps in the little finger toenail may be due to heredity, which is one of the characteristics of most Han Chinese, and does not need to be dealt with. 3. Fungal infections: Fungal infections may lead to lesions of the little bunion nails, causing the condition of having two flaps on the little bunion toenail. It can be treated by taking itraconazole and using topical terbinafine ointment under the guidance of a doctor. Therefore, when the little finger toenail has two flaps of patients, should go to the hospital as soon as possible, under the guidance of the doctor for standardized treatment.