The reason for the pain after the ointment is mainly the following: 1, after the ointment may produce local allergies, local inflammation and blisters, etc., will lead to obvious pain symptoms. 2, the location of the ointment may be trauma or infection lesions, after the ointment led to local injury and infection lesions, gradually spread, aggravated, will also appear pain symptoms. 3, in the paste at the same time did not do a good job related to precautions, such as the cervical spine parts have obvious pain, paste should keep the cervical spine relaxed, can no longer low head ambulation time long, more can not appear cervical spine parts of the cold, if precautions do not do well, will certainly lead to pain symptoms aggravated. 4, if a place has swelling, in the paste at the same time must avoid in the acute period, because the ankle joint If the ankle joint is damaged, the plastering in the acute stage leads to vasodilatation, which may increase the local blood leakage and lead to more obvious pain.