Rotten feet may be due to lower extremity vascular lesions, fungal infections, diabetic foot and other reasons, need to be analyzed according to the symptoms. 1. Lower extremity vascular lesions: when the lower extremity vascular lesions (such as venous thrombosis, varicose veins, venous embolism, etc.), it is easy to affect the local blood supply, resulting in local tissue ischemia, necrosis, etc. If there are traumatic injuries, it is easy to lead to poor wound healing, thus making the paw rot. If there are traumatic injuries, it is easy to lead to poor wound healing, thus causing ulceration of the foot. 2. Fungal infection: frequent walking, standing for a long time because of work, etc., can promote the secretion of excessive sweat in the foot area. If you don’t pay attention to foot hygiene for a long time, it will make the sole of the foot in a moist environment for a long time, which will easily lead to the invasion and propagation of fungus, blisters, itching and other symptoms, and in serious cases, the phenomenon of rotting sole of the foot will occur. 3. Diabetic foot: With the development of diabetes, it can lead to lesions of blood vessels and nerves in the foot far away from the ankle joint, thus making the foot suffer from insufficient blood supply and abnormal sensation. This can lead to symptoms such as ulceration and infection in the foot, and ulceration of the sole of the foot can occur. When ulceration occurs on the soles of the feet, it is recommended that one should pay attention to foot hygiene to avoid infection or aggravation of infection. You should go to the hospital in time, clarify the cause of the disease, and then actively carry out treatment under the guidance of the doctor.