The difference between fallen arches and flat feet is usually due to the different foot shapes of the patients, the different effects of the diseases, and the different treatments. 1. Different foot types: usually the feet of patients with fallen arches are bent forward and backward, and the middle part of the soles of the feet cannot touch the ground when the patients stand up. Patients with flat feet will have symptoms of clubfoot and foot pain when walking. 2. Differences in disease effects: Usually, most patients with flat feet do not have obvious symptoms, especially children with flat feet. 3. Different treatments: Collapsed arches are usually caused by obesity or flat feet, which require symptomatic treatment. Flatfoot patients without special symptoms generally do not need treatment, only need to observe more. It is recommended that patients should consult a doctor if they have any discomfort, so as to avoid delaying their condition.