It is not always possible to apply topical plasters after a foot fracture, but it is necessary to combine the specific condition and pay attention to the following aspects: 1. Within 24 hours of the injury, plasters cannot be used in any case, because most of them have the effect of activating blood stasis and relieving pain, and using them at this time will aggravate the bleeding and swelling inside. 2. After a fracture, it is not recommended to use plasters when the skin surface has scabs or open injuries, because in the process of tearing off the plaster, it will easily lead to an aggravation of the damaged skin. The fracture surgery is not a good idea to use ointment because the process of tearing off the ointment will easily lead to aggravation of the damaged skin. 3, before the fracture incision is dismantled or there is infection around the wound, the treatment of ointment cannot be used externally. 4, after the fracture surgery, the incision is dismantled without scabbing and the swelling basically subsides, the treatment of ointment can be used externally to activate blood circulation, soften the soft tissue and help the fracture site to subside the swelling and pain.