The price of each drug of navel patch is different, it is not good to generalize, for example, children’s diarrhea, stomach pain commonly used Ding Gui Er navel patch, the price is about 20 yuan, mainly for diarrhea, the navel patch will be applied to the navel, usually 2-3 days to replace once. If the pain caused by tumor, especially cancerous pain, when the pain is more obvious, the clinical use is fentanyl transdermal patch, the trade name is Doregis, the price is 500 yuan up and down, the price may be different in different hospitals. It is an anesthetic drug that needs to be prescribed to the hospital to get the red prescription for anesthesia, and needs to be replaced once every 3 days, and the analgesic effect is still possible.