There is no “ten harms of back scraping”, the main harms of back scraping are skin infection, may aggravate certain diseases. 1. cause skin infection. Inappropriate scraping strength or technique may damage the back skin, skin surface common pathogenic bacteria such as staphylococcus aureus will invade the skin with the wound, is likely to lead to skin pus, ulceration and other signs of infection. 2. May aggravate certain cardiovascular and cerebrovascular diseases. For people suffering from hypertension or cerebrovascular lesions inappropriate back scraping may further aggravate the condition, should be treated with caution. Back scraping belongs to a kind of blood circulation medical means, it is recommended to have the relevant needs of the crowd to the regular hospital, in the doctor’s professional operation, in order to ensure the safety and efficacy.