Blood blisters on the patient’s feet can be caused by a variety of reasons, the most common of which is friction trauma, which may be caused by uncomfortable shoes, trauma to the foot, or medical operations such as local freezing. The blood blisters on the feet may also be related to mosquito bites, it is recommended to seek timely medical treatment for the cause. 1, friction trauma: If the blood blisters caused by friction, trauma, medical operations, such as uncomfortable shoes, trauma caused by impact, liquid nitrogen freezing treatment, etc., the treatment is more or less the same, if the blood blisters on the feet are small, generally do not need to deal with, keep the affected area clean and dry can be; if the blood blisters are larger, you need to use sterilized If the blood blister is larger, you need to use a sterile needle to pick the blister first, and then wipe the blood with a sterile cotton swab, and then follow the doctor’s instructions to use anti-inflammatory ointment on the affected area, you can also use a syringe to draw out the blister after disinfection, and then apply boric acid solution, and then apply fusidic acid cream anti-inflammatory to avoid infection; 2, mosquito bites: mosquito bites caused by blood blisters can also use a syringe to draw, and then apply local topical lincomycin lidocaine gel or with anti-inflammatory effect after drawing Denide cream, mometasone furoate cream, etc. After the blood blisters break, pay attention to keep the local clean and dry to prevent secondary infection, avoid stimulating the wound with hot water, wear light and breathable shoes and socks; do not eat spicy food in the near future, and supplement protein and vitamins in time to facilitate wound recovery.