Thumb caught by the car door need to pay attention to the following points: First, in the first 24 hours after the injury, local ice packs for cold compresses, generally 2-3 times a day, 10-20 minutes each time, cold compresses can reduce the local tissue edema, local oozing blood, can reduce pain. Second, in the 2-3 days after the injury can be localized hot compresses, which can promote the absorption of edema and hematoma absorption. Third, you can mouth mild analgesic drugs, such as ibuprofen extended-release capsules, pain relief tablets, tramadol and other drugs. Fourth, you can take oral medications to clear heat and lower fire, such as Shuanghuanglian Oral Liquid, Jinyinhua Oral Liquid, etc. Fifth, you can go to the Chinese medicine department to apply some herbs to relieve pain and reduce swelling. Sixth, the fingers need to be lifted as high as possible to reduce the congestion of the fingers, which can reduce pain and swelling.