Foot drop is a common clinical condition characterized by the inability of the anterior compartment muscles of the lower leg to actively contract or maintain a neutral position, resulting in an inability to perform dorsiflexion at the ankle. This case involves a patient who developed acute foot drop due to a central cause following a traumatic brain injury. The acupuncture treatment strategy focused on the principle of "treating Wei (痿) Syndrome"-also known as muscular flaccidity or atrophy of the limbs-by targeting the Yangming meridian. The acupuncture points were located on the Foot-Yangming Meridian and Governor Vessel, with additional points selected based on TCM etiology and pathogenesis theory. The patient was also treated with herbal medications, guided by principles that involved invigorating blood circulation, eliminating heat and dampness, and nourishing the heart and liver. After four weeks of treatment, the patient's foot drop condition improved; after seven weeks, partial dorsiflexion of the foot was achieved; and after eleven weeks, the patient was able to walk independently under supervision and was discharged.