If you are bitten by a small red spider, you need to remove the foreign body as soon as possible with adhesive tape and treat it by local rinsing, local disinfection and local ice packs. 1. Tape off the foreign body: The foreign body stuck on the skin needs to be removed as soon as possible, otherwise itching, burning and other discomforts will occur. Try to use tape to remove the spider hairs on the skin. 2. Topical irrigation: Wash the affected area with soap and water after squeezing the wound from proximal to distal to remove the residual tissue. 3. Local disinfection: Some spiders are poisonous, and it is difficult for people to distinguish them from other spiders. Therefore, you should disinfect the area as soon as possible after being bitten, use iodophor or alcohol to smear the affected area, and then apply hydrocortisone ointment. 4. Local ice packs: If there is swelling and discomfort after being bitten by a spider, it is recommended to use an ice water bag to apply ice packs appropriately. After being bitten by a small red spider can first follow the above way to deal with, if the treatment effect is not good to appear significant redness and swelling or other adverse reactions, it is recommended to consult a doctor in a timely manner, and under the guidance of a professional physician targeted treatment.