1, the back of the foot pulse method gently press the thickest blood vessels on the surface of the foot, elastic and beating obviously means that the vascular condition is good. If you can’t feel it, and after walking a certain distance, you have to stop and rest because of calf pain, and then you can walk the same distance after resting for a few minutes (clinically called “intermittent claudication”), you must go to the vascular surgery department. 2.Sensory method The protective sensation of temperature, pain, pressure, etc. is reduced or lost, such as numbness of the foot and loss of sensation. Blood sugar control is needed to prevent ulcer formation and infection. For example, rubbing smooth toenail edges after soaking feet in warm cool water + foot cream for dry feet (not to be used between toes) + loose socks without strangulation + cloth shoes (one size larger than feet) + dry inside shoes.