Diabetes has a complication called “diabetic foot”. When it comes to “diabetic foot”, the first thing that comes to your mind may be “rotten feet”, “foot ulcers”, “amputation The first thing that comes to your mind is perhaps “rotten feet”, “foot ulcers”, “amputation” and other horrible images. Today, I am writing this article to tell you that “diabetic foot” is not terrible, as long as early examination, “diabetic foot” can be prevented. Concept The diabetic foot is a foot ulcer, infection and/or deep tissue destruction associated with distal nerve abnormalities and varying degrees of peripheral vascular disease in the lower extremities. In mild cases, the foot may present with deformity, dry skin, coldness, and callus (high-risk foot); in severe cases, foot ulceration and jaundice may occur. Early examination of diabetic foot includes medical history inquiry, physical examination, relevant neurological and vascular examination and other aspects of disease assessment. I. Medical history inquiry 1. Understand the duration of the disease, treatment and its complications. 2. If ulcer disease has occurred, the cause, duration, degree and progress of ulcer should be understood. Physical examination 1. Focus on the appearance, extent, depth, temperature and odor of the ulcerated surface, and determine whether there is deformity, swelling, soft tissue infection or osteomyelitis in the foot. 2.Check the condition of the patient’s contralateral limb. 3.Check whether the shoes and socks are suitable. C. Relevant nerve and vascular examination 1. Lower limb nerve sensory examination/screening; 2. Plantar pressure determination; 3. Peripheral vascular examination.