Spider bites can be treated by applying topical medication, and in severe cases, oral medication is required. Generally after being bitten by spiders, local allergic symptoms such as blisters, swelling, itching or pain may occur, but spiders at home are generally not toxic, if the bite is mild, you can use soapy water to wash the wound, and then apply glucocorticoid medicine, such as tretinoin cream, mometasone furoate cream and other anti-inflammatory and anti-allergic. If the swelling, itching and pain are more serious, you can take oral antihistamines, such as loratadine tablets, cetirizine tablets and other anti-allergy, the drug must be used under the guidance of a doctor. If the symptoms of the spider bite are very serious, with breathing difficulties, vomiting, abdominal pain, or even convulsions, you need to seek immediate medical attention to avoid delays.