Some diabetic patients have to inject insulin frequently, and it is crucial to use the correct method to inject insulin, so they need to be skilled in the injection steps. Correct method of insulin injection: I. Injection method and steps II. Key instructions 1. Mix the insulin well Before using cloudy insulin (such as NPH and premixed insulin), the insulin should be mixed well. Put the insulin pen flat in your hand and roll it horizontally 10 times, then hold the insulin pen with both hands and turn it up and down 10 times by swinging it up and down with your elbow joint and forearm to mix the bottle well until the insulin turns into a uniform cloudy white liquid. 2.According to the length of the insulin injection pen needle, it is clear whether to pinch the skin and the angle of needle entry Using 4 or 5mm ultra-fine ultra-short type needle for injection, there is no need to pinch up the skin and you can directly enter the needle vertically. If other length needles are used, the skin should be pinched up and the needle should be inserted quickly into the subcutaneous layer at a 90-degree or 45-degree angle for injection. For patients with thin subcutaneous tissue when injecting with longer needles (such as with insulin syringes) a 45-degree angle can be used to avoid injecting into the muscle layer.